[INFO] cloning repository https://github.com/enosuity/fearless-concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/enosuity/fearless-concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Ffearless-concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Ffearless-concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4e39bc55aa1ad1c03cd87d47213deb2c58dc603
[INFO] checking enosuity/fearless-concurrency against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenosuity%2Ffearless-concurrency" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/enosuity/fearless-concurrency
[INFO] finished tweaking git repo https://github.com/enosuity/fearless-concurrency
[INFO] tweaked toml for git repo https://github.com/enosuity/fearless-concurrency written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/enosuity/fearless-concurrency on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/enosuity/fearless-concurrency 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-5-tc1/source/Cargo.toml: unused manifest key: dependencies.performance-considerations.default
[INFO] [stderr] warning: /workspace/builds/worker-5-tc1/source/Cargo.toml: unused manifest key: dependencies.singleton-wrapper.default
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56291ca7c3083bc4dbb9459e5df91f2a7ccd6fbac73914ae29fd79cd65c2c33f
[INFO] running `Command { std: "docker" "start" "-a" "56291ca7c3083bc4dbb9459e5df91f2a7ccd6fbac73914ae29fd79cd65c2c33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56291ca7c3083bc4dbb9459e5df91f2a7ccd6fbac73914ae29fd79cd65c2c33f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56291ca7c3083bc4dbb9459e5df91f2a7ccd6fbac73914ae29fd79cd65c2c33f", kill_on_drop: false }`
[INFO] [stdout] 56291ca7c3083bc4dbb9459e5df91f2a7ccd6fbac73914ae29fd79cd65c2c33f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e6bd8d96b6deb006736a13baaf64c773f836609a5b0d89c6c9f9f74659c8f45
[INFO] running `Command { std: "docker" "start" "-a" "1e6bd8d96b6deb006736a13baaf64c773f836609a5b0d89c6c9f9f74659c8f45", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: dependencies.performance-considerations.default
[INFO] [stderr] warning: /opt/rustwide/workdir/Cargo.toml: unused manifest key: dependencies.singleton-wrapper.default
[INFO] [stderr]     Checking custom-lock-guard v0.1.0 (/opt/rustwide/workdir/custom-lock-guard)
[INFO] [stderr]     Checking performance-considerations v0.1.0 (/opt/rustwide/workdir/performance-considerations)
[INFO] [stderr]     Checking singleton-wrapper v0.1.0 (/opt/rustwide/workdir/singleton-wrapper)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> custom-lock-guard/src/lib.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn lock(&self) -> CustomLockGuard<T> {
[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] 14 |     fn lock(&self) -> CustomLockGuard<'_, T> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> custom-lock-guard/src/lib.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn lock(&self) -> RwCustomLockGuard<T> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn lock(&self) -> RwCustomLockGuard<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> custom-lock-guard/src/lib.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn lock(&self) -> CustomLockGuard<T> {
[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] 14 |     fn lock(&self) -> CustomLockGuard<'_, T> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> custom-lock-guard/src/lib.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn lock(&self) -> RwCustomLockGuard<T> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn lock(&self) -> RwCustomLockGuard<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking fearless-concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "1e6bd8d96b6deb006736a13baaf64c773f836609a5b0d89c6c9f9f74659c8f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e6bd8d96b6deb006736a13baaf64c773f836609a5b0d89c6c9f9f74659c8f45", kill_on_drop: false }`
[INFO] [stdout] 1e6bd8d96b6deb006736a13baaf64c773f836609a5b0d89c6c9f9f74659c8f45