[INFO] cloning repository https://github.com/imDema/gc-micro-challenger
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imDema/gc-micro-challenger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FimDema%2Fgc-micro-challenger", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FimDema%2Fgc-micro-challenger'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 115f7bd85f96ec7e682c553d1fc3a82237a3b4f3
[INFO] checking imDema/gc-micro-challenger against master#779e19d8baa3e3625bd4fc5c85cbb2ad47b43155 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FimDema%2Fgc-micro-challenger" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/imDema/gc-micro-challenger
[INFO] finished tweaking git repo https://github.com/imDema/gc-micro-challenger
[INFO] tweaked toml for git repo https://github.com/imDema/gc-micro-challenger written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/imDema/gc-micro-challenger on toolchain 779e19d8baa3e3625bd4fc5c85cbb2ad47b43155
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/imDema/gc-micro-challenger 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" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded rust-embed v8.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06c70f7b055942c731bbda73168530b7e8437a99cbb7f2f711e21f784bc121ca
[INFO] running `Command { std: "docker" "start" "-a" "06c70f7b055942c731bbda73168530b7e8437a99cbb7f2f711e21f784bc121ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06c70f7b055942c731bbda73168530b7e8437a99cbb7f2f711e21f784bc121ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06c70f7b055942c731bbda73168530b7e8437a99cbb7f2f711e21f784bc121ca", kill_on_drop: false }`
[INFO] [stdout] 06c70f7b055942c731bbda73168530b7e8437a99cbb7f2f711e21f784bc121ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+779e19d8baa3e3625bd4fc5c85cbb2ad47b43155" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e99d75dcbee39bdd394466e0992f2d296e71595b09786220a5249c58f5dcc187
[INFO] running `Command { std: "docker" "start" "-a" "e99d75dcbee39bdd394466e0992f2d296e71595b09786220a5249c58f5dcc187", kill_on_drop: false }`
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[INFO] [stderr]     Checking micro-challenger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:169:26
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 .map(|x| (x.end - x.start))
[INFO] [stdout]     |                          ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 169 -                 .map(|x| (x.end - x.start))
[INFO] [stdout] 169 +                 .map(|x| x.end - x.start )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:169:26
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 .map(|x| (x.end - x.start))
[INFO] [stdout]     |                          ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 169 -                 .map(|x| (x.end - x.start))
[INFO] [stdout] 169 +                 .map(|x| x.end - x.start )
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 00s
[INFO] running `Command { std: "docker" "inspect" "e99d75dcbee39bdd394466e0992f2d296e71595b09786220a5249c58f5dcc187", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e99d75dcbee39bdd394466e0992f2d296e71595b09786220a5249c58f5dcc187", kill_on_drop: false }`
[INFO] [stdout] e99d75dcbee39bdd394466e0992f2d296e71595b09786220a5249c58f5dcc187