Bear with me here, still learning about tramp and how to debug it. Here
is a proper backtrace that shows the error source seems to be
`tramp-signal-hook-function(wrong-type-argument (stringp nil))`:
17:42:13.200213 tramp-send-command-and-read (10) #
backtrace()
tramp-error((tramp-file-name "docker" nil nil "alpine3173" nil nil nil)
wrong-type-argument "stringp nil")
tramp-signal-hook-function(wrong-type-argument (stringp nil))
format-message(nil)
error(nil)
#<subr tramp-send-command-and-read>((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror nil)
apply(#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf47dd1477011>)(#<subr tramp-send-command-and-read> (tramp-file-name
"docker" nil nil "alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror)
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf47dd1477011>)
#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo \\\"`tty`\\\"" noerror))
tramp-send-command-and-read((tramp-file-name "docker" nil nil "alpine3173"
nil nil nil) "echo \\\"`tty`\\\"" noerror)
#<subr tramp-open-connection-setup-interactive-shell>(#<process sh>
(tramp-file-name "docker" nil nil "alpine3173" nil nil nil))
apply(#<subr tramp-open-connection-setup-interactive-shell> (#<process sh>
(tramp-file-name "docker" nil nil "alpine3173" nil nil nil)))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf710c86f7011>)(#<subr tramp-open-connection-setup-interactive-shell>
#<process sh> (tramp-file-name "docker" nil nil "alpine3173" nil nil nil))
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf710c86f7011>)
#<subr tramp-open-connection-setup-interactive-shell> (#<process sh>
(tramp-file-name "docker" nil nil "alpine3173" nil nil nil)))
tramp-open-connection-setup-interactive-shell(#<process sh> (tramp-file-name
"docker" nil nil "alpine3173" nil nil nil))
#<subr tramp-maybe-open-connection>((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil))
apply(#<subr tramp-maybe-open-connection> (tramp-file-name "docker" nil nil
"alpine3173" nil nil nil))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf710af577011>)(#<subr tramp-maybe-open-connection> (tramp-file-name
"docker" nil nil "alpine3173" nil nil nil))
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf710af577011>)
#<subr tramp-maybe-open-connection> (tramp-file-name "docker" nil nil
"alpine3173" nil nil nil))
tramp-maybe-open-connection((tramp-file-name "docker" nil nil "alpine3173"
nil nil nil))
#<subr tramp-send-command>((tramp-file-name "docker" nil nil "alpine3173" nil
nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?" nil nil)
apply(#<subr tramp-send-command> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?"))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf513bf137011>)(#<subr tramp-send-command> (tramp-file-name "docker" nil
nil "alpine3173" nil nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?")
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf513bf137011>)
#<subr tramp-send-command> ((tramp-file-name "docker" nil nil "alpine3173" nil
nil nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?"))
tramp-send-command((tramp-file-name "docker" nil nil "alpine3173" nil nil
nil) "echo $$ 2>/dev/null; echo tramp_exit_status $?")
#<subr tramp-send-command-and-check>((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$" nil nil nil)
apply(#<subr tramp-send-command-and-check> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$"))
#f(compiled-function (body &rest args) #<bytecode
-0x128bfa65754b7011>)(#<subr tramp-send-command-and-check> (tramp-file-name
"docker" nil nil "alpine3173" nil nil nil) "echo $$")
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bfa65754b7011>)
#<subr tramp-send-command-and-check> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$"))
tramp-send-command-and-check((tramp-file-name "docker" nil nil "alpine3173"
nil nil nil) "echo $$")
#<subr tramp-barf-unless-okay>((tramp-file-name "docker" nil nil "alpine3173"
nil nil nil) "echo $$" "`%s' returns with error" "echo $$")
apply(#<subr tramp-barf-unless-okay> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$" "`%s' returns with error" "echo $$"))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf47dcb2f7011>)(#<subr tramp-barf-unless-okay> (tramp-file-name "docker"
nil nil "alpine3173" nil nil nil) "echo $$" "`%s' returns with error" "echo $$")
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf47dcb2f7011>)
#<subr tramp-barf-unless-okay> ((tramp-file-name "docker" nil nil "alpine3173"
nil nil nil) "echo $$" "`%s' returns with error" "echo $$"))
tramp-barf-unless-okay((tramp-file-name "docker" nil nil "alpine3173" nil nil
nil) "echo $$" "`%s' returns with error" "echo $$")
#<subr tramp-send-command-and-read>((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$" nil nil)
apply(#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$"))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf47dd1477011>)(#<subr tramp-send-command-and-read> (tramp-file-name
"docker" nil nil "alpine3173" nil nil nil) "echo $$")
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf47dd1477011>)
#<subr tramp-send-command-and-read> ((tramp-file-name "docker" nil nil
"alpine3173" nil nil nil) "echo $$"))
tramp-send-command-and-read((tramp-file-name "docker" nil nil "alpine3173"
nil nil nil) "echo $$")
#<subr tramp-sh-handle-make-process>(:name "sh" :buffer #<buffer *eshell*>
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
apply(#<subr tramp-sh-handle-make-process> (:name "sh" :buffer #<buffer
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf7aef9377011>)(#<subr tramp-sh-handle-make-process> :name "sh" :buffer
#<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t)))
:filter eshell-interactive-process-filter :sentinel eshell-sentinel
:connection-type nil :stderr nil :file-handler t)
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf7aef9377011>)
#<subr tramp-sh-handle-make-process> (:name "sh" :buffer #<buffer *eshell*>
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t))
tramp-sh-handle-make-process(:name "sh" :buffer #<buffer *eshell*> :command
("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
#<subr tramp-sh-file-name-handler>(make-process :name "sh" :buffer #<buffer
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
apply(#<subr tramp-sh-file-name-handler> (make-process :name "sh" :buffer
#<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t)))
:filter eshell-interactive-process-filter :sentinel eshell-sentinel
:connection-type nil :stderr nil :file-handler t))
#f(compiled-function (body &rest args) #<bytecode
-0x128bf7aec0837011>)(#<subr tramp-sh-file-name-handler> make-process :name
"sh" :buffer #<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6
(escaped t))) :filter eshell-interactive-process-filter :sentinel
eshell-sentinel :connection-type nil :stderr nil :file-handler t)
apply(#f(compiled-function (body &rest args) #<bytecode -0x128bf7aec0837011>)
#<subr tramp-sh-file-name-handler> (make-process :name "sh" :buffer #<buffer
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t))
tramp-sh-file-name-handler(make-process :name "sh" :buffer #<buffer *eshell*>
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
apply(tramp-sh-file-name-handler make-process (:name "sh" :buffer #<buffer
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t))
#<subr tramp-file-name-handler>(make-process :name "sh" :buffer #<buffer
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
apply(#<subr tramp-file-name-handler> (make-process :name "sh" :buffer
#<buffer *eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t)))
:filter eshell-interactive-process-filter :sentinel eshell-sentinel
:connection-type nil :stderr nil :file-handler t))
#f(compiled-function (body &rest args) #<bytecode 0xd0ec2f587d08fec>)(#<subr
tramp-file-name-handler> make-process :name "sh" :buffer #<buffer *eshell*>
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
apply(#f(compiled-function (body &rest args) #<bytecode 0xd0ec2f587d08fec>)
#<subr tramp-file-name-handler> (make-process :name "sh" :buffer #<buffer
*eshell*> :command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t))
tramp-file-name-handler(make-process :name "sh" :buffer #<buffer *eshell*>
:command ("/bin/sh" "-c" #("whoami" 0 6 (escaped t))) :filter
eshell-interactive-process-filter :sentinel eshell-sentinel :connection-type
nil :stderr nil :file-handler t)
eshell-gather-process-output("/docker:alpine3173://bin/sh" ("-c" #("whoami" 0
6 (escaped t))))
eshell-external-command("sh" ("-c" #("whoami" 0 6 (escaped t))))
eshell-plain-command("sh" ("-c" #("whoami" 0 6 (escaped t))))
eshell-named-command("sh" ("-c" #("whoami" 0 6 (escaped t))))
eval((eshell-named-command '"sh" '("-c" #("whoami" 0 6 (escaped t)))))
eshell-do-eval((eshell-named-command '"sh" '("-c" #("whoami" 0 6 (escaped
t)))) nil)
eshell-do-eval((prog1 (eshell-named-command '"sh" '("-c" #("whoami" 0 6
(escaped t)))) (mapc #'funcall eshell-this-command-hook)) nil)
(condition-case err (eshell-do-eval '(prog1 (eshell-named-command '"sh"
'("-c" #("whoami" 0 6 ...))) (mapc #'funcall eshell-this-command-hook)) nil)
((debug error) (mapc #'funcall eshell-this-command-hook) (eshell-errorn
(error-message-string err)) (eshell-close-handles 1)))
eval((condition-case err (eshell-do-eval '(prog1 (eshell-named-command '"sh"
'("-c" ...)) (mapc #'funcall eshell-this-command-hook)) nil) ((debug error)
(mapc #'funcall eshell-this-command-hook) (eshell-errorn (error-message-string
err)) (eshell-close-handles 1))))
eshell-do-eval((condition-case err (eshell-do-eval '(prog1
(eshell-named-command '"sh" '("-c" ...)) (mapc #'funcall
eshell-this-command-hook)) nil) ((debug error) (mapc #'funcall
eshell-this-command-hook) (eshell-errorn (error-message-string err))
(eshell-close-handles 1))) nil)
#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)()
funcall(#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))
(let ((eshell-this-command-hook '(ignore))) (funcall '#f(compiled-function ()
#<bytecode 0x1c62a7ab417757e1>)))
eval((let ((eshell-this-command-hook '(ignore))) (funcall
'#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))))
eshell-do-eval((let ((eshell-this-command-hook '(ignore))) (condition-case
err (eshell-do-eval '(prog1 (eshell-named-command '"sh" '...) (mapc #'funcall
eshell-this-command-hook)) nil) ((debug error) (mapc #'funcall
eshell-this-command-hook) (eshell-errorn (error-message-string err))
(eshell-close-handles 1)))) nil)
#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)()
funcall(#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))
(let ((eshell-current-handles '[nil (((t) . 2) t) (((t) . 2) t)])) (funcall
'#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)))
eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2) t)]))
(funcall '#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))))
eshell-do-eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2)
t)])) (let ((eshell-this-command-hook '(ignore))) (condition-case err
(eshell-do-eval '(prog1 (eshell-named-command ... ...) (mapc ...
eshell-this-command-hook)) nil) ((debug error) (mapc #'funcall
eshell-this-command-hook) (eshell-errorn (error-message-string err))
(eshell-close-handles 1))))) nil)
eshell-do-eval((progn (let ((eshell-current-handles '[nil (... t) (... t)]))
(let ((eshell-this-command-hook '(ignore))) (condition-case err (eshell-do-eval
'(prog1 ... ...) nil) ((debug error) (mapc #'funcall eshell-this-command-hook)
(eshell-errorn (error-message-string err)) (eshell-close-handles 1)))))) nil)
(catch 'top-level (eshell-do-eval '(progn (let ((eshell-current-handles
'...)) (let ((eshell-this-command-hook ...)) (condition-case err
(eshell-do-eval ... nil) (... ... ... ...))))) nil))
eval((catch 'top-level (eshell-do-eval '(progn (let ((eshell-current-handles
...)) (let (...) (condition-case err ... ...)))) nil)))
eshell-do-eval((catch 'top-level (eshell-do-eval '(progn (let
((eshell-current-handles ...)) (let (...) (condition-case err ... ...)))) nil))
nil)
eshell-do-eval((progn 'nil (catch 'top-level (eshell-do-eval '(progn (let
(...) (let ... ...))) nil)) (run-hooks 'eshell-post-command-hook)) nil)
#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>)()
funcall(#f(compiled-function () #<bytecode 0x1c62a7ab417757e1>))
(let ((eshell-current-handles '[nil (((t) . 2) t) (((t) . 2) t)])
(eshell-current-subjob-p 'nil)) (funcall '#f(compiled-function () #<bytecode
0x1c62a7ab417757e1>)))
eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2) t)])
(eshell-current-subjob-p 'nil)) (funcall '#f(compiled-function () #<bytecode
0x1c62a7ab417757e1>))))
eshell-do-eval((let ((eshell-current-handles '[nil ((... . 2) t) ((... . 2)
t)]) eshell-current-subjob-p) (progn 'nil (catch 'top-level (eshell-do-eval
'(progn (let ... ...)) nil)) (run-hooks 'eshell-post-command-hook))))
eshell-resume-eval()
eshell-eval-command((let ((eshell-current-handles '[nil ((... . 2) t) ((... .
2) t)]) eshell-current-subjob-p) (progn 'nil (catch 'top-level (eshell-do-eval
'(progn (let ... ...)) nil)) (run-hooks 'eshell-post-command-hook))) "sh -c
'whoami'")
eshell-send-input(nil)
funcall-interactively(eshell-send-input nil)
command-execute(eshell-send-input)
17:42:13.200734 tramp-send-command-and-read (1) # Wrong type argument: "Wrong
type argument", "stringp nil"
