[INFO] cloning repository https://github.com/FotoVerite/rust-maelstorm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FotoVerite/rust-maelstorm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFotoVerite%2Frust-maelstorm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFotoVerite%2Frust-maelstorm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18efbe8ab7a4020c9f52c689c9239e7d1855a4e4
[INFO] checking FotoVerite/rust-maelstorm against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFotoVerite%2Frust-maelstorm" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FotoVerite/rust-maelstorm
[INFO] finished tweaking git repo https://github.com/FotoVerite/rust-maelstorm
[INFO] tweaked toml for git repo https://github.com/FotoVerite/rust-maelstorm written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FotoVerite/rust-maelstorm on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FotoVerite/rust-maelstorm 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking FotoVerite/rust-maelstorm against try#66388cc165a6c4ac98c074dc9f0281ff23528c55 for pr-150727
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFotoVerite%2Frust-maelstorm" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/FotoVerite/rust-maelstorm
[INFO] finished tweaking git repo https://github.com/FotoVerite/rust-maelstorm
[INFO] tweaked toml for git repo https://github.com/FotoVerite/rust-maelstorm written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/FotoVerite/rust-maelstorm on toolchain 66388cc165a6c4ac98c074dc9f0281ff23528c55
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/FotoVerite/rust-maelstorm 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" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19a270c30c471b1388c8b8ab924ebad4f4a10fefccccbb75036571f0467be78c
[INFO] running `Command { std: "docker" "start" "-a" "19a270c30c471b1388c8b8ab924ebad4f4a10fefccccbb75036571f0467be78c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a270c30c471b1388c8b8ab924ebad4f4a10fefccccbb75036571f0467be78c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a270c30c471b1388c8b8ab924ebad4f4a10fefccccbb75036571f0467be78c", kill_on_drop: false }`
[INFO] [stdout] 19a270c30c471b1388c8b8ab924ebad4f4a10fefccccbb75036571f0467be78c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+66388cc165a6c4ac98c074dc9f0281ff23528c55" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93c92a42866d530d09cdff6dbdd635c564d57ebdb4082408888dcc2dd15565b9
[INFO] running `Command { std: "docker" "start" "-a" "93c92a42866d530d09cdff6dbdd635c564d57ebdb4082408888dcc2dd15565b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.142
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking socket2 v0.6.0
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking tokio-util v0.7.16
[INFO] [stderr]     Checking maelstrom-rust-node v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/storage/cas.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let (tx, mut rx) = tokio::sync::mpsc::channel(10);
[INFO] [stdout]    |                  ----^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/storage/cas.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let (tx, mut rx) = tokio::sync::mpsc::channel(10);
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/storage/g_counter.rs:66:18
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let (tx, mut rx) = tokio::sync::mpsc::channel(10);
[INFO] [stdout]    |                  ----^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/storage/g_counter.rs:66:18
[INFO] [stdout]    |
[INFO] [stdout] 66 |         let (tx, mut rx) = tokio::sync::mpsc::channel(10);
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.55s
[INFO] running `Command { std: "docker" "inspect" "93c92a42866d530d09cdff6dbdd635c564d57ebdb4082408888dcc2dd15565b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c92a42866d530d09cdff6dbdd635c564d57ebdb4082408888dcc2dd15565b9", kill_on_drop: false }`
[INFO] [stdout] 93c92a42866d530d09cdff6dbdd635c564d57ebdb4082408888dcc2dd15565b9
