[INFO] fetching crate sink-splitter 0.1.0...
[INFO] testing sink-splitter-0.1.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate sink-splitter 0.1.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate sink-splitter 0.1.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sink-splitter 0.1.0
[INFO] finished tweaking crates.io crate sink-splitter 0.1.0
[INFO] tweaked toml for crates.io crate sink-splitter 0.1.0 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1beebaf30d432d7c952fcf1dc6988e9fe5784cd99d4245fcd2c2d79a798de7b9
[INFO] running `Command { std: "docker" "start" "-a" "1beebaf30d432d7c952fcf1dc6988e9fe5784cd99d4245fcd2c2d79a798de7b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1beebaf30d432d7c952fcf1dc6988e9fe5784cd99d4245fcd2c2d79a798de7b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1beebaf30d432d7c952fcf1dc6988e9fe5784cd99d4245fcd2c2d79a798de7b9", kill_on_drop: false }`
[INFO] [stdout] 1beebaf30d432d7c952fcf1dc6988e9fe5784cd99d4245fcd2c2d79a798de7b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fa7e032fbc16a31a8a0fd6f8c73cc662e64812fff29a1ed7f0c510785c19da5
[INFO] running `Command { std: "docker" "start" "-a" "0fa7e032fbc16a31a8a0fd6f8c73cc662e64812fff29a1ed7f0c510785c19da5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling futures v0.1.31
[INFO] [stderr]    Compiling sink-splitter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:102:19
[INFO] [stdout]     |
[INFO] [stdout] 102 |         for (key, mut sink) in &mut self.inner.borrow_mut().sinks {
[INFO] [stdout]     |                   ----^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout] 1   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:133:19
[INFO] [stdout]     |
[INFO] [stdout] 133 |         for (key, mut sink) in &mut self.inner.borrow_mut().sinks {
[INFO] [stdout]     |                   ----^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sink-splitter` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0fa7e032fbc16a31a8a0fd6f8c73cc662e64812fff29a1ed7f0c510785c19da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa7e032fbc16a31a8a0fd6f8c73cc662e64812fff29a1ed7f0c510785c19da5", kill_on_drop: false }`
[INFO] [stdout] 0fa7e032fbc16a31a8a0fd6f8c73cc662e64812fff29a1ed7f0c510785c19da5