[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] checking Aboussejra/rustfmt_bug against master#5dbf4069dc98bbbca98dd600a65f50c258fbfd56 for pr-148477-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAboussejra%2Frustfmt_bug" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/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-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Aboussejra/rustfmt_bug on toolchain 5dbf4069dc98bbbca98dd600a65f50c258fbfd56
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5dbf4069dc98bbbca98dd600a65f50c258fbfd56" "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" "+5dbf4069dc98bbbca98dd600a65f50c258fbfd56" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+5dbf4069dc98bbbca98dd600a65f50c258fbfd56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e90e5d7edfb23bea965020bfcbb51926b492d3877ca1481704c24ec909631e6
[INFO] running `Command { std: "docker" "start" "-a" "5e90e5d7edfb23bea965020bfcbb51926b492d3877ca1481704c24ec909631e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e90e5d7edfb23bea965020bfcbb51926b492d3877ca1481704c24ec909631e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e90e5d7edfb23bea965020bfcbb51926b492d3877ca1481704c24ec909631e6", kill_on_drop: false }`
[INFO] [stdout] 5e90e5d7edfb23bea965020bfcbb51926b492d3877ca1481704c24ec909631e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+5dbf4069dc98bbbca98dd600a65f50c258fbfd56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02556b6a3eb45e665590d13a004fc1941da09eb128ef446496a1777f18e5fc46
[INFO] running `Command { std: "docker" "start" "-a" "02556b6a3eb45e665590d13a004fc1941da09eb128ef446496a1777f18e5fc46", kill_on_drop: false }`
[INFO] [stderr]     Checking 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)]` (part of `#[warn(unused)]`) 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] [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)]` (part of `#[warn(unused)]`) 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 0.06s
[INFO] running `Command { std: "docker" "inspect" "02556b6a3eb45e665590d13a004fc1941da09eb128ef446496a1777f18e5fc46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02556b6a3eb45e665590d13a004fc1941da09eb128ef446496a1777f18e5fc46", kill_on_drop: false }`
[INFO] [stdout] 02556b6a3eb45e665590d13a004fc1941da09eb128ef446496a1777f18e5fc46
