[INFO] cloning repository https://github.com/meskill/rust-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/meskill/rust-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeskill%2Frust-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeskill%2Frust-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 184c9976ea4effc4be284e05758e040c4bd19730
[INFO] checking meskill/rust-lab against try#1779a8680dcd39c56ed600627cf6742ef07ed78c for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeskill%2Frust-lab" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/meskill/rust-lab
[INFO] finished tweaking git repo https://github.com/meskill/rust-lab
[INFO] tweaked toml for git repo https://github.com/meskill/rust-lab written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/meskill/rust-lab on toolchain 1779a8680dcd39c56ed600627cf6742ef07ed78c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/meskill/rust-lab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f536be981e1fd8e25ac32227c08bebe333028a5fc99b241dd904ff863931c9e8
[INFO] running `Command { std: "docker" "start" "-a" "f536be981e1fd8e25ac32227c08bebe333028a5fc99b241dd904ff863931c9e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f536be981e1fd8e25ac32227c08bebe333028a5fc99b241dd904ff863931c9e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f536be981e1fd8e25ac32227c08bebe333028a5fc99b241dd904ff863931c9e8", kill_on_drop: false }`
[INFO] [stdout] f536be981e1fd8e25ac32227c08bebe333028a5fc99b241dd904ff863931c9e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b4427c252091b639e9893ab07ea6b6dbe143984cc125473181890befc4edaa0
[INFO] running `Command { std: "docker" "start" "-a" "7b4427c252091b639e9893ab07ea6b6dbe143984cc125473181890befc4edaa0", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking web_server v0.1.0 (/opt/rustwide/workdir/book/web_server)
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/book/minigrep)
[INFO] [stderr]     Checking become_immortal v0.1.0 (/opt/rustwide/workdir/codewars/become_immortal)
[INFO] [stderr]     Checking nth_prime v2.1.0 (/opt/rustwide/workdir/exercism/rust/nth-prime)
[INFO] [stderr]     Checking luhn-from v0.0.0 (/opt/rustwide/workdir/exercism/rust/luhn-from)
[INFO] [stdout] warning: function `elder_age` is never used
[INFO] [stdout]  --> codewars/become_immortal/src/lib.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn elder_age(m: u64, n: u64, l: u64, t: u64) -> u64 {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking armstrong_numbers v1.1.0 (/opt/rustwide/workdir/exercism/rust/armstrong-numbers)
[INFO] [stderr]     Checking beer-song v0.0.0 (/opt/rustwide/workdir/exercism/rust/beer-song)
[INFO] [stderr]     Checking proverb v1.1.0 (/opt/rustwide/workdir/exercism/rust/proverb)
[INFO] [stderr]     Checking bob v1.6.0 (/opt/rustwide/workdir/exercism/rust/bob)
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking high-scores v4.0.0 (/opt/rustwide/workdir/exercism/rust/high-scores)
[INFO] [stderr]     Checking matching-brackets v2.0.0 (/opt/rustwide/workdir/exercism/rust/matching-brackets)
[INFO] [stderr]     Checking difference-of-squares v1.2.0 (/opt/rustwide/workdir/exercism/rust/difference-of-squares)
[INFO] [stderr]     Checking prime_factors v1.1.0 (/opt/rustwide/workdir/exercism/rust/prime-factors)
[INFO] [stderr]     Checking luhn-trait v0.0.0 (/opt/rustwide/workdir/exercism/rust/luhn-trait)
[INFO] [stderr]     Checking raindrops v1.1.0 (/opt/rustwide/workdir/exercism/rust/raindrops)
[INFO] [stderr]     Checking collatz_conjecture v1.2.1 (/opt/rustwide/workdir/exercism/rust/collatz-conjecture)
[INFO] [stderr]     Checking leap v1.6.0 (/opt/rustwide/workdir/exercism/rust/leap)
[INFO] [stderr]     Checking clock v2.4.0 (/opt/rustwide/workdir/exercism/rust/clock)
[INFO] [stderr]     Checking grains v1.2.0 (/opt/rustwide/workdir/exercism/rust/grains)
[INFO] [stderr]     Checking sum-of-multiples v1.5.0 (/opt/rustwide/workdir/exercism/rust/sum-of-multiples)
[INFO] [stderr]     Checking luhn v1.6.1 (/opt/rustwide/workdir/exercism/rust/luhn)
[INFO] [stderr]     Checking series v0.1.0 (/opt/rustwide/workdir/exercism/rust/series)
[INFO] [stderr]     Checking hamming v2.2.0 (/opt/rustwide/workdir/exercism/rust/hamming)
[INFO] [stderr]     Checking space-age v1.2.0 (/opt/rustwide/workdir/exercism/rust/space-age)
[INFO] [stderr]     Checking anagram v0.0.0 (/opt/rustwide/workdir/exercism/rust/anagram)
[INFO] [stderr]     Checking reverse_string v1.2.0 (/opt/rustwide/workdir/exercism/rust/reverse-string)
[INFO] [stderr]     Checking rail_fence_cypher v0.1.0 (/opt/rustwide/workdir/codewars/rail_fence_cypher)
[INFO] [stderr]     Checking last-digit-of-a-huge-number v0.1.0 (/opt/rustwide/workdir/codewars/last-digit-of-a-huge-number)
[INFO] [stderr]     Checking eval_math_expression v0.1.0 (/opt/rustwide/workdir/codewars/eval_math_expression)
[INFO] [stderr]     Checking plants_and_zombies v0.1.0 (/opt/rustwide/workdir/codewars/plants_and_zombies)
[INFO] [stderr]     Checking screen-locking-patterns v0.1.0 (/opt/rustwide/workdir/codewars/screen-locking-patterns)
[INFO] [stderr]     Checking last-digit-of-a-large-number v0.1.0 (/opt/rustwide/workdir/codewars/last-digit-of-a-large-number)
[INFO] [stdout] warning: trait `Ast` is never used
[INFO] [stdout]    --> codewars/eval_math_expression/src/lib.rs:398:19
[INFO] [stdout]     |
[INFO] [stdout] 398 |         pub trait Ast<'token>: IntoIterator<Item = &'token Token> {}
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> codewars/eval_math_expression/src/lib.rs:225:34
[INFO] [stdout]     |
[INFO] [stdout] 225 |         pub fn tokens_iter(text: &str) -> TokenIterator {
[INFO] [stdout]     |                                  ^^^^     ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 225 |         pub fn tokens_iter(text: &str) -> TokenIterator<'_> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> book/web_server/src/thread_pool.rs:202:44
[INFO] [stdout]     |
[INFO] [stdout] 202 |         assert_eq!(counter.lock().unwrap().as_ref(), vec![0, 1, 2, 3]);
[INFO] [stdout]     |                                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `Vec<u32>: AsRef<_>` found in the `alloc` crate:
[INFO] [stdout]             - impl<T, A> AsRef<Vec<T, A>> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout]             - impl<T, A> AsRef<[T]> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]     |
[INFO] [stdout] 202 -         assert_eq!(counter.lock().unwrap().as_ref(), vec![0, 1, 2, 3]);
[INFO] [stdout] 202 +         assert_eq!(<Vec<u32> as AsRef<T>>::as_ref(&counter.lock().unwrap()), vec![0, 1, 2, 3]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> book/web_server/src/thread_pool.rs:235:44
[INFO] [stdout]     |
[INFO] [stdout] 235 |         assert_eq!(counter.lock().unwrap().as_ref(), vec![1, 0, 3, 2]);
[INFO] [stdout]     |                                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `Vec<u32>: AsRef<_>` found in the `alloc` crate:
[INFO] [stdout]             - impl<T, A> AsRef<Vec<T, A>> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout]             - impl<T, A> AsRef<[T]> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]     |
[INFO] [stdout] 235 -         assert_eq!(counter.lock().unwrap().as_ref(), vec![1, 0, 3, 2]);
[INFO] [stdout] 235 +         assert_eq!(<Vec<u32> as AsRef<T>>::as_ref(&counter.lock().unwrap()), vec![1, 0, 3, 2]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> book/web_server/src/thread_pool.rs:268:44
[INFO] [stdout]     |
[INFO] [stdout] 268 |         assert_eq!(counter.lock().unwrap().as_ref(), vec![1, 3, 2, 0]);
[INFO] [stdout]     |                                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `Vec<u32>: AsRef<_>` found in the `alloc` crate:
[INFO] [stdout]             - impl<T, A> AsRef<Vec<T, A>> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout]             - impl<T, A> AsRef<[T]> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]     |
[INFO] [stdout] 268 -         assert_eq!(counter.lock().unwrap().as_ref(), vec![1, 3, 2, 0]);
[INFO] [stdout] 268 +         assert_eq!(<Vec<u32> as AsRef<T>>::as_ref(&counter.lock().unwrap()), vec![1, 3, 2, 0]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> book/web_server/src/thread_pool.rs:301:44
[INFO] [stdout]     |
[INFO] [stdout] 301 |         assert_eq!(counter.lock().unwrap().as_ref(), vec![3, 1, 2, 0]);
[INFO] [stdout]     |                                            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `Vec<u32>: AsRef<_>` found in the `alloc` crate:
[INFO] [stdout]             - impl<T, A> AsRef<Vec<T, A>> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout]             - impl<T, A> AsRef<[T]> for Vec<T, A>
[INFO] [stdout]               where A: Allocator;
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]     |
[INFO] [stdout] 301 -         assert_eq!(counter.lock().unwrap().as_ref(), vec![3, 1, 2, 0]);
[INFO] [stdout] 301 +         assert_eq!(<Vec<u32> as AsRef<T>>::as_ref(&counter.lock().unwrap()), vec![3, 1, 2, 0]);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking human-readable-duration-format v0.1.0 (/opt/rustwide/workdir/codewars/human-readable-duration-format)
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `web_server` (lib test) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7b4427c252091b639e9893ab07ea6b6dbe143984cc125473181890befc4edaa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b4427c252091b639e9893ab07ea6b6dbe143984cc125473181890befc4edaa0", kill_on_drop: false }`
[INFO] [stdout] 7b4427c252091b639e9893ab07ea6b6dbe143984cc125473181890befc4edaa0
