[INFO] fetching crate sync42 0.15.0...
[INFO] checking sync42-0.15.0 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate sync42 0.15.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate sync42 0.15.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sync42 0.15.0
[INFO] tweaked toml for crates.io crate sync42 0.15.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sync42 0.15.0 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 crates.io crate sync42 0.15.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded biometrics v0.12.0
[INFO] [stderr]   Downloaded guacamole v0.14.0
[INFO] [stderr]   Downloaded derive_util v0.5.0
[INFO] [stderr]   Downloaded arrrg v0.8.0
[INFO] [stderr]   Downloaded arrrg_derive v0.8.0
[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] 574331cf117221797a4fbe82c68d26ae922f07c321a4c6a04c8be787349424e0
[INFO] running `Command { std: "docker" "start" "-a" "574331cf117221797a4fbe82c68d26ae922f07c321a4c6a04c8be787349424e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "574331cf117221797a4fbe82c68d26ae922f07c321a4c6a04c8be787349424e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "574331cf117221797a4fbe82c68d26ae922f07c321a4c6a04c8be787349424e0", kill_on_drop: false }`
[INFO] [stdout] 574331cf117221797a4fbe82c68d26ae922f07c321a4c6a04c8be787349424e0
[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] e8ec4edd9e6c658310e4cc2b010881d6c9baf6c2bffabd3e6acb3311b6f7a73c
[INFO] running `Command { std: "docker" "start" "-a" "e8ec4edd9e6c658310e4cc2b010881d6c9baf6c2bffabd3e6acb3311b6f7a73c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking sig_fig_histogram v0.6.0
[INFO] [stderr]     Checking biometrics v0.12.0
[INFO] [stderr]     Checking getopts v0.2.23
[INFO] [stderr]     Checking sync42 v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wait_list.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn link(&self, t: T) -> WaitGuard<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] 150 |     pub fn link(&self, t: T) -> WaitGuard<'_, T> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling derive_util v0.5.0
[INFO] [stderr]    Compiling arrrg_derive v0.8.0
[INFO] [stderr]     Checking arrrg v0.8.0
[INFO] [stderr]     Checking guacamole v0.14.0
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/wait_list.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn link(&self, t: T) -> WaitGuard<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] 150 |     pub fn link(&self, t: T) -> WaitGuard<'_, T> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.38s
[INFO] running `Command { std: "docker" "inspect" "e8ec4edd9e6c658310e4cc2b010881d6c9baf6c2bffabd3e6acb3311b6f7a73c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8ec4edd9e6c658310e4cc2b010881d6c9baf6c2bffabd3e6acb3311b6f7a73c", kill_on_drop: false }`
[INFO] [stdout] e8ec4edd9e6c658310e4cc2b010881d6c9baf6c2bffabd3e6acb3311b6f7a73c