[INFO] fetching crate maelstrom-broker 0.14.0...
[INFO] checking maelstrom-broker-0.14.0 against master#6f34f4ee074ce0affc7bbf4e2c835f66cd576f13 for pr-147017
[INFO] extracting crate maelstrom-broker 0.14.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate maelstrom-broker 0.14.0
[INFO] finished tweaking crates.io crate maelstrom-broker 0.14.0
[INFO] tweaked toml for crates.io crate maelstrom-broker 0.14.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate maelstrom-broker 0.14.0 on toolchain 6f34f4ee074ce0affc7bbf4e2c835f66cd576f13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6f34f4ee074ce0affc7bbf4e2c835f66cd576f13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate maelstrom-broker 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" "+6f34f4ee074ce0affc7bbf4e2c835f66cd576f13" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+6f34f4ee074ce0affc7bbf4e2c835f66cd576f13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c98e0df6c963892dee8c518a016928710114eaa47a25361d30723066c6b1940
[INFO] running `Command { std: "docker" "start" "-a" "8c98e0df6c963892dee8c518a016928710114eaa47a25361d30723066c6b1940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c98e0df6c963892dee8c518a016928710114eaa47a25361d30723066c6b1940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c98e0df6c963892dee8c518a016928710114eaa47a25361d30723066c6b1940", kill_on_drop: false }`
[INFO] [stdout] 8c98e0df6c963892dee8c518a016928710114eaa47a25361d30723066c6b1940
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+6f34f4ee074ce0affc7bbf4e2c835f66cd576f13" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ac03409e6b58e1be91f49dff2374bf557a950f52531b8bf4f53bfe3cde12418
[INFO] running `Command { std: "docker" "start" "-a" "0ac03409e6b58e1be91f49dff2374bf557a950f52531b8bf4f53bfe3cde12418", kill_on_drop: false }`
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[INFO] [stderr]     Checking maelstrom-broker v0.14.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/scheduler_task/artifact_gatherer.rs:971:19
[INFO] [stdout]     |
[INFO] [stdout] 971 |         fn expect(&mut self) -> Expect {
[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] 971 |         fn expect(&mut self) -> Expect<'_> {
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/scheduler_task/scheduler.rs:877:19
[INFO] [stdout]     |
[INFO] [stdout] 877 |         fn expect(&mut self) -> Expect {
[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] 877 |         fn expect(&mut self) -> Expect<'_> {
[INFO] [stdout]     |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "0ac03409e6b58e1be91f49dff2374bf557a950f52531b8bf4f53bfe3cde12418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ac03409e6b58e1be91f49dff2374bf557a950f52531b8bf4f53bfe3cde12418", kill_on_drop: false }`
[INFO] [stdout] 0ac03409e6b58e1be91f49dff2374bf557a950f52531b8bf4f53bfe3cde12418