[INFO] fetching crate gcmap 0.1.4...
[INFO] checking gcmap-0.1.4 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate gcmap 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate gcmap 0.1.4 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gcmap 0.1.4
[INFO] finished tweaking crates.io crate gcmap 0.1.4
[INFO] tweaked toml for crates.io crate gcmap 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78187a1853ce9567532b80f695336ba49a468e39dd2c1450d9f8aacb05b2ab64
[INFO] running `Command { std: "docker" "start" "-a" "78187a1853ce9567532b80f695336ba49a468e39dd2c1450d9f8aacb05b2ab64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78187a1853ce9567532b80f695336ba49a468e39dd2c1450d9f8aacb05b2ab64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78187a1853ce9567532b80f695336ba49a468e39dd2c1450d9f8aacb05b2ab64", kill_on_drop: false }`
[INFO] [stdout] 78187a1853ce9567532b80f695336ba49a468e39dd2c1450d9f8aacb05b2ab64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25735d44f61b35a66af6ce8c135b45485634ddc16108832d09c9c2a99a284674
[INFO] running `Command { std: "docker" "start" "-a" "25735d44f61b35a66af6ce8c135b45485634ddc16108832d09c9c2a99a284674", kill_on_drop: false }`
[INFO] [stderr]     Checking gcmap v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `mark`
[INFO] [stdout]    --> src/lib.rs:224:10
[INFO] [stdout]     |
[INFO] [stdout] 224 |     let (mark, _) = wm.insert(2, 8);
[INFO] [stdout]     |          ^^^^ help: if this is intentional, prefix it with an underscore: `_mark`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mark`
[INFO] [stdout]    --> src/lib.rs:251:47
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let val = wm.entry(1).or_insert_with(|mark|2);
[INFO] [stdout]     |                                               ^^^^ help: if this is intentional, prefix it with an underscore: `_mark`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "25735d44f61b35a66af6ce8c135b45485634ddc16108832d09c9c2a99a284674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25735d44f61b35a66af6ce8c135b45485634ddc16108832d09c9c2a99a284674", kill_on_drop: false }`
[INFO] [stdout] 25735d44f61b35a66af6ce8c135b45485634ddc16108832d09c9c2a99a284674