[INFO] fetching crate sync42 0.14.0...
[INFO] checking sync42-0.14.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate sync42 0.14.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate sync42 0.14.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sync42 0.14.0
[INFO] tweaked toml for crates.io crate sync42 0.14.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sync42 0.14.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sync42 0.14.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_util v0.4.0
[INFO] [stderr]   Downloaded sig_fig_histogram v0.5.0
[INFO] [stderr]   Downloaded arrrg v0.7.0
[INFO] [stderr]   Downloaded biometrics v0.11.0
[INFO] [stderr]   Downloaded guacamole v0.11.0
[INFO] [stderr]   Downloaded arrrg_derive v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5943ba83cf62be6baccf547f2243766fe9a636b3d4fdbf1819830523403e532f
[INFO] running `Command { std: "docker" "start" "-a" "5943ba83cf62be6baccf547f2243766fe9a636b3d4fdbf1819830523403e532f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5943ba83cf62be6baccf547f2243766fe9a636b3d4fdbf1819830523403e532f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5943ba83cf62be6baccf547f2243766fe9a636b3d4fdbf1819830523403e532f", kill_on_drop: false }`
[INFO] [stdout] 5943ba83cf62be6baccf547f2243766fe9a636b3d4fdbf1819830523403e532f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8df4c756b4bd226937900f2d23e273f6ee78bcfdda512386dc01c76f875fe0d0
[INFO] running `Command { std: "docker" "start" "-a" "8df4c756b4bd226937900f2d23e273f6ee78bcfdda512386dc01c76f875fe0d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking sig_fig_histogram v0.5.0
[INFO] [stderr]     Checking biometrics v0.11.0
[INFO] [stderr]     Checking sync42 v0.14.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be 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 lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn link(&self, t: T) -> WaitGuard<'_, T> {
[INFO] [stdout]     |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling derive_util v0.4.0
[INFO] [stderr]    Compiling arrrg_derive v0.7.0
[INFO] [stderr]     Checking arrrg v0.7.0
[INFO] [stderr]     Checking guacamole v0.11.0
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be 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 lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for 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 3.66s
[INFO] running `Command { std: "docker" "inspect" "8df4c756b4bd226937900f2d23e273f6ee78bcfdda512386dc01c76f875fe0d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8df4c756b4bd226937900f2d23e273f6ee78bcfdda512386dc01c76f875fe0d0", kill_on_drop: false }`
[INFO] [stdout] 8df4c756b4bd226937900f2d23e273f6ee78bcfdda512386dc01c76f875fe0d0