[INFO] cloning repository https://github.com/maxwag9/rusty_skylines
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maxwag9/rusty_skylines" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxwag9%2Frusty_skylines", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxwag9%2Frusty_skylines'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] abc42521ce0c48da95522b61f8a4156cfb1f2af7
[INFO] checking maxwag9/rusty_skylines against try#3248bace201b6227b0ff78eacc8b00d805551a86 for pr-153513
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaxwag9%2Frusty_skylines" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/maxwag9/rusty_skylines
[INFO] finished tweaking git repo https://github.com/maxwag9/rusty_skylines
[INFO] tweaked toml for git repo https://github.com/maxwag9/rusty_skylines written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/maxwag9/rusty_skylines on toolchain 3248bace201b6227b0ff78eacc8b00d805551a86
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3248bace201b6227b0ff78eacc8b00d805551a86" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/maxwag9/rusty_skylines 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" "+3248bace201b6227b0ff78eacc8b00d805551a86" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3248bace201b6227b0ff78eacc8b00d805551a86" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 861b7e3ad5659729bdf3771c7ec297ca5fab8937fd58c771623d98c5e5641236
[INFO] running `Command { std: "docker" "start" "-a" "861b7e3ad5659729bdf3771c7ec297ca5fab8937fd58c771623d98c5e5641236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "861b7e3ad5659729bdf3771c7ec297ca5fab8937fd58c771623d98c5e5641236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "861b7e3ad5659729bdf3771c7ec297ca5fab8937fd58c771623d98c5e5641236", kill_on_drop: false }`
[INFO] [stdout] 861b7e3ad5659729bdf3771c7ec297ca5fab8937fd58c771623d98c5e5641236
[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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3248bace201b6227b0ff78eacc8b00d805551a86" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f91aea4a08138ff3d059f569aacb8c87531b08c1f132e5be706873b781bc728
[INFO] running `Command { std: "docker" "start" "-a" "8f91aea4a08138ff3d059f569aacb8c87531b08c1f132e5be706873b781bc728", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.20
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[INFO] [stderr]     Checking Rusty_Skylines v0.6.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/data.rs:670:13
[INFO] [stdout]     |
[INFO] [stdout] 670 |         let mut settings = match fs::read_to_string(path) {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/data.rs:670:13
[INFO] [stdout]     |
[INFO] [stdout] 670 |         let mut settings = match fs::read_to_string(path) {
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 08s
[INFO] running `Command { std: "docker" "inspect" "8f91aea4a08138ff3d059f569aacb8c87531b08c1f132e5be706873b781bc728", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f91aea4a08138ff3d059f569aacb8c87531b08c1f132e5be706873b781bc728", kill_on_drop: false }`
[INFO] [stdout] 8f91aea4a08138ff3d059f569aacb8c87531b08c1f132e5be706873b781bc728