[INFO] cloning repository https://github.com/Aboussejra/rustfmt_bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aboussejra/rustfmt_bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAboussejra%2Frustfmt_bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAboussejra%2Frustfmt_bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b4e38d9c94a333ffa7677a80d5104d39bc7cd78
[INFO] testing Aboussejra/rustfmt_bug against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAboussejra%2Frustfmt_bug" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Aboussejra/rustfmt_bug
[INFO] finished tweaking git repo https://github.com/Aboussejra/rustfmt_bug
[INFO] tweaked toml for git repo https://github.com/Aboussejra/rustfmt_bug written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Aboussejra/rustfmt_bug on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Aboussejra/rustfmt_bug 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e74458d959bd9f5505a29b38d717f6d12ff2bd226194ce59ac5f068fa1b72626
[INFO] running `Command { std: "docker" "start" "-a" "e74458d959bd9f5505a29b38d717f6d12ff2bd226194ce59ac5f068fa1b72626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e74458d959bd9f5505a29b38d717f6d12ff2bd226194ce59ac5f068fa1b72626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e74458d959bd9f5505a29b38d717f6d12ff2bd226194ce59ac5f068fa1b72626", kill_on_drop: false }`
[INFO] [stdout] e74458d959bd9f5505a29b38d717f6d12ff2bd226194ce59ac5f068fa1b72626
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1540483b9add3e07bf178a546e6ceca3dad0f2bbf04dd53cee4027ca1341d610
[INFO] running `Command { std: "docker" "start" "-a" "1540483b9add3e07bf178a546e6ceca3dad0f2bbf04dd53cee4027ca1341d610", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustfmt_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | /         vector_of_vectors.iter().map(|vector_of_number|
[INFO] [stdout] 4 | |             {
[INFO] [stdout] 5 | |             let bar = vector_of_number.iter().find(|number|
[INFO] [stdout] 6 | |             number == &&1).expect("this is a long message, which makes rustfmt fails if long enough");
[INFO] [stdout] 7 | |             bar});
[INFO] [stdout]   | |_________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 3 |         let _ = vector_of_vectors.iter().map(|vector_of_number|
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "1540483b9add3e07bf178a546e6ceca3dad0f2bbf04dd53cee4027ca1341d610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1540483b9add3e07bf178a546e6ceca3dad0f2bbf04dd53cee4027ca1341d610", kill_on_drop: false }`
[INFO] [stdout] 1540483b9add3e07bf178a546e6ceca3dad0f2bbf04dd53cee4027ca1341d610
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ede63d81c7f1e97abcf952cfab7dac34ffa6afc9e410f94a947f926c84f40e6
[INFO] running `Command { std: "docker" "start" "-a" "2ede63d81c7f1e97abcf952cfab7dac34ffa6afc9e410f94a947f926c84f40e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustfmt_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Map` that must be used
[INFO] [stdout]  --> src/main.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | /         vector_of_vectors.iter().map(|vector_of_number|
[INFO] [stdout] 4 | |             {
[INFO] [stdout] 5 | |             let bar = vector_of_number.iter().find(|number|
[INFO] [stdout] 6 | |             number == &&1).expect("this is a long message, which makes rustfmt fails if long enough");
[INFO] [stdout] 7 | |             bar});
[INFO] [stdout]   | |_________________^
[INFO] [stdout]   |
[INFO] [stdout]   = note: iterators are lazy and do nothing unless consumed
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 3 |         let _ = vector_of_vectors.iter().map(|vector_of_number|
[INFO] [stdout]   |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "2ede63d81c7f1e97abcf952cfab7dac34ffa6afc9e410f94a947f926c84f40e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ede63d81c7f1e97abcf952cfab7dac34ffa6afc9e410f94a947f926c84f40e6", kill_on_drop: false }`
[INFO] [stdout] 2ede63d81c7f1e97abcf952cfab7dac34ffa6afc9e410f94a947f926c84f40e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3ddc4f9af6f283b2b34be31465487c0d3add460d289587e51feeef3fc70ebb65
[INFO] running `Command { std: "docker" "start" "-a" "3ddc4f9af6f283b2b34be31465487c0d3add460d289587e51feeef3fc70ebb65", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Map` that must be used
[INFO] [stderr]  --> src/main.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | /         vector_of_vectors.iter().map(|vector_of_number|
[INFO] [stderr] 4 | |             {
[INFO] [stderr] 5 | |             let bar = vector_of_number.iter().find(|number|
[INFO] [stderr] 6 | |             number == &&1).expect("this is a long message, which makes rustfmt fails if long enough");
[INFO] [stderr] 7 | |             bar});
[INFO] [stderr]   | |_________________^
[INFO] [stderr]   |
[INFO] [stderr]   = note: iterators are lazy and do nothing unless consumed
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 3 |         let _ = vector_of_vectors.iter().map(|vector_of_number|
[INFO] [stderr]   |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rustfmt_bug` (bin "rustfmt_bug" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustfmt_bug-1c031ba7bbb82040)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3ddc4f9af6f283b2b34be31465487c0d3add460d289587e51feeef3fc70ebb65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ddc4f9af6f283b2b34be31465487c0d3add460d289587e51feeef3fc70ebb65", kill_on_drop: false }`
[INFO] [stdout] 3ddc4f9af6f283b2b34be31465487c0d3add460d289587e51feeef3fc70ebb65
