[INFO] fetching crate maelstrom-broker 0.14.0...
[INFO] checking maelstrom-broker-0.14.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate maelstrom-broker 0.14.0 into /workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate maelstrom-broker 0.14.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a45344820b585c87c323a0fdc697328c19f003b57401f8923721c79717947af
[INFO] running `Command { std: "docker" "start" "-a" "9a45344820b585c87c323a0fdc697328c19f003b57401f8923721c79717947af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a45344820b585c87c323a0fdc697328c19f003b57401f8923721c79717947af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a45344820b585c87c323a0fdc697328c19f003b57401f8923721c79717947af", kill_on_drop: false }`
[INFO] [stdout] 9a45344820b585c87c323a0fdc697328c19f003b57401f8923721c79717947af
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f027520895637e19f7f3026580975c7b4eb06344d7aff95d4703e34b8a7786b8
[INFO] running `Command { std: "docker" "start" "-a" "f027520895637e19f7f3026580975c7b4eb06344d7aff95d4703e34b8a7786b8", kill_on_drop: false }`
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[INFO] [stdout] error: this type will no longer be must used: Result<BrokerPort, Infallible>
[INFO] [stdout]   --> src/config.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[derive(Config, Debug)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<RootBuf<CacheDir>, Infallible>
[INFO] [stdout]   --> src/config.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[derive(Config, Debug)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CacheSize, Infallible>
[INFO] [stdout]   --> src/config.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[derive(Config, Debug)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `maelstrom-broker` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<BrokerPort, Infallible>
[INFO] [stdout]   --> src/config.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[derive(Config, Debug)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<RootBuf<CacheDir>, Infallible>
[INFO] [stdout]   --> src/config.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[derive(Config, Debug)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CacheSize, Infallible>
[INFO] [stdout]   --> src/config.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | #[derive(Config, Debug)]
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Config` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[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] error: could not compile `maelstrom-broker` (lib test) due to 3 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f027520895637e19f7f3026580975c7b4eb06344d7aff95d4703e34b8a7786b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f027520895637e19f7f3026580975c7b4eb06344d7aff95d4703e34b8a7786b8", kill_on_drop: false }`
[INFO] [stdout] f027520895637e19f7f3026580975c7b4eb06344d7aff95d4703e34b8a7786b8
