[INFO] cloning repository https://github.com/VitalyAnkh/learn_error_handling
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VitalyAnkh/learn_error_handling" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVitalyAnkh%2Flearn_error_handling", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVitalyAnkh%2Flearn_error_handling'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9cf67b08bbfba5b416953d982e1a8eada6ad2f8
[INFO] checking VitalyAnkh/learn_error_handling against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVitalyAnkh%2Flearn_error_handling" "/workspace/builds/worker-81/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-81/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VitalyAnkh/learn_error_handling on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VitalyAnkh/learn_error_handling
[INFO] finished tweaking git repo https://github.com/VitalyAnkh/learn_error_handling
[INFO] tweaked toml for git repo https://github.com/VitalyAnkh/learn_error_handling written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] crate git repo https://github.com/VitalyAnkh/learn_error_handling already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4465f1fc6d11227e49f332e230921d18601369e3e52790701283710b47b697f7
[INFO] running `Command { std: "docker" "start" "-a" "4465f1fc6d11227e49f332e230921d18601369e3e52790701283710b47b697f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4465f1fc6d11227e49f332e230921d18601369e3e52790701283710b47b697f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4465f1fc6d11227e49f332e230921d18601369e3e52790701283710b47b697f7", kill_on_drop: false }`
[INFO] [stdout] 4465f1fc6d11227e49f332e230921d18601369e3e52790701283710b47b697f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 210a04fcac6ac930f3d80f6289eaa2b422597ead8343b7895ac3cb8ea647f641
[INFO] running `Command { std: "docker" "start" "-a" "210a04fcac6ac930f3d80f6289eaa2b422597ead8343b7895ac3cb8ea647f641", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking learn_error_handling v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/smart_pointer/ref_cell.rs (2 fixes)
[INFO] [stderr]        Fixed src/smart_pointer/rc.rs (1 fix)
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Cons` in this scope
[INFO] [stdout]   --> src/smart_pointer/rc.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let a = Rc::new(Cons(2,Rc::new(Cons(3,Rc::new(Nil)))));
[INFO] [stdout]    |                     ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this tuple variant
[INFO] [stdout]    |
[INFO] [stdout] 6  | use crate::smart_pointer::rc::List::Cons;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Cons` in this scope
[INFO] [stdout]   --> src/smart_pointer/rc.rs:11:36
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let a = Rc::new(Cons(2,Rc::new(Cons(3,Rc::new(Nil)))));
[INFO] [stdout]    |                                    ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this tuple variant
[INFO] [stdout]    |
[INFO] [stdout] 6  | use crate::smart_pointer::rc::List::Cons;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `Nil` in this scope
[INFO] [stdout]   --> src/smart_pointer/rc.rs:11:51
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let a = Rc::new(Cons(2,Rc::new(Cons(3,Rc::new(Nil)))));
[INFO] [stdout]    |                                                   ^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this unit variant
[INFO] [stdout]    |
[INFO] [stdout] 6  | use crate::smart_pointer::rc::List::Nil;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function, tuple struct or tuple variant `Cons` in this scope
[INFO] [stdout]   --> src/smart_pointer/rc.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let _b = Cons(2,Rc::clone(&a));
[INFO] [stdout]    |              ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this tuple variant
[INFO] [stdout]    |
[INFO] [stdout] 6  | use crate::smart_pointer::rc::List::Cons;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_error_handling` due to 5 previous errors
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/smart_pointer/rc.rs (1 fix)
[INFO] [stdout] warning: struct is never constructed: `Guess`
[INFO] [stdout]  --> src/read/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Guess {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/read/mod.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new(value: u32) -> Guess {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `List`
[INFO] [stdout]  --> src/smart_pointer/rc.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum List{
[INFO] [stdout]   |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/read/mod.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |         if value < 0 || value > 100 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "210a04fcac6ac930f3d80f6289eaa2b422597ead8343b7895ac3cb8ea647f641", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "210a04fcac6ac930f3d80f6289eaa2b422597ead8343b7895ac3cb8ea647f641", kill_on_drop: false }`
[INFO] [stdout] 210a04fcac6ac930f3d80f6289eaa2b422597ead8343b7895ac3cb8ea647f641