[INFO] cloning repository https://github.com/imjamesku/rust-linked-lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imjamesku/rust-linked-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimjamesku%2Frust-linked-lists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimjamesku%2Frust-linked-lists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f991c81869a8d9a12610267b50f9ceeb795fbbe
[INFO] checking imjamesku/rust-linked-lists against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimjamesku%2Frust-linked-lists" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imjamesku/rust-linked-lists on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/imjamesku/rust-linked-lists
[INFO] finished tweaking git repo https://github.com/imjamesku/rust-linked-lists
[INFO] tweaked toml for git repo https://github.com/imjamesku/rust-linked-lists written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/imjamesku/rust-linked-lists 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" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4a8e5eea541a568ce9d9f9beccc2014d54e3470eb10ae6f0b074a12aee8afa9
[INFO] running `Command { std: "docker" "start" "-a" "e4a8e5eea541a568ce9d9f9beccc2014d54e3470eb10ae6f0b074a12aee8afa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4a8e5eea541a568ce9d9f9beccc2014d54e3470eb10ae6f0b074a12aee8afa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4a8e5eea541a568ce9d9f9beccc2014d54e3470eb10ae6f0b074a12aee8afa9", kill_on_drop: false }`
[INFO] [stdout] e4a8e5eea541a568ce9d9f9beccc2014d54e3470eb10ae6f0b074a12aee8afa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43208953a41234e154ee8876ad12b465a206d9717f6e549c87a3de78ac99673c
[INFO] running `Command { std: "docker" "start" "-a" "43208953a41234e154ee8876ad12b465a206d9717f6e549c87a3de78ac99673c", kill_on_drop: false }`
[INFO] [stderr]     Checking lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/second.rs:55:49
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn iter_mut<'a>(&'a mut self) -> IterMut<T> {
[INFO] [stdout]    |                     --                          ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     lifetime `'a` declared here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/second.rs:55:49
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn iter_mut<'a>(&'a mut self) -> IterMut<T> {
[INFO] [stdout]    |                     --                          ^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     lifetime `'a` declared here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "43208953a41234e154ee8876ad12b465a206d9717f6e549c87a3de78ac99673c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43208953a41234e154ee8876ad12b465a206d9717f6e549c87a3de78ac99673c", kill_on_drop: false }`
[INFO] [stdout] 43208953a41234e154ee8876ad12b465a206d9717f6e549c87a3de78ac99673c