[INFO] fetching crate vat-viewer 0.2.0...
[INFO] checking vat-viewer-0.2.0 against 011c518242557d21690f7936b5812318dc2fec47 for pr-159877
[INFO] extracting crate vat-viewer 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate vat-viewer 0.2.0
[INFO] finished tweaking crates.io crate vat-viewer 0.2.0
[INFO] tweaked toml for crates.io crate vat-viewer 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vat-viewer 0.2.0 on toolchain 011c518242557d21690f7936b5812318dc2fec47
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vat-viewer 0.2.0 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" "+011c518242557d21690f7936b5812318dc2fec47" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb
[INFO] running `Command { std: "docker" "start" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb" "/opt/rustwide/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb" "/opt/rustwide/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking vat-viewer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/engines/syntax.rs:1396:9
[INFO] [stdout]      |
[INFO] [stdout] 1396 |     let mut flush = |buf: &mut String, spans: &mut Vec<Span<'static>>| {
[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/engines/syntax.rs:1396:9
[INFO] [stdout]      |
[INFO] [stdout] 1396 |     let mut flush = |buf: &mut String, spans: &mut Vec<Span<'static>>| {
[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 1m 59s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: polars-lazy v0.38.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb", kill_on_drop: false }`
[INFO] [stdout] d1ff70d7e2fea1b44b33c5d3d37065dd82ea96b86da8b9ba081b29803ce6f7cb
