[INFO] fetching crate rustkernel 0.0.21...
[INFO] testing rustkernel-0.0.21 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate rustkernel 0.0.21 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rustkernel 0.0.21
[INFO] finished tweaking crates.io crate rustkernel 0.0.21
[INFO] tweaked toml for crates.io crate rustkernel 0.0.21 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustkernel 0.0.21 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustkernel 0.0.21 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 989bd280e117a7d690bae42d9958ddfcafbce6b59d7fb7369a38ff0d2be77a78
[INFO] running `Command { std: "docker" "start" "-a" "989bd280e117a7d690bae42d9958ddfcafbce6b59d7fb7369a38ff0d2be77a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "989bd280e117a7d690bae42d9958ddfcafbce6b59d7fb7369a38ff0d2be77a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "989bd280e117a7d690bae42d9958ddfcafbce6b59d7fb7369a38ff0d2be77a78", kill_on_drop: false }`
[INFO] [stdout] 989bd280e117a7d690bae42d9958ddfcafbce6b59d7fb7369a38ff0d2be77a78
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 607f6772175b86cac821de25b1b00ed40a23e3f257dd4a0bda44c9e0a6a367db
[INFO] running `Command { std: "docker" "start" "-a" "607f6772175b86cac821de25b1b00ed40a23e3f257dd4a0bda44c9e0a6a367db", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustkernel v0.0.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/program.rs:77:75
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[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] 77 -         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stdout] 77 +         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| cell).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "607f6772175b86cac821de25b1b00ed40a23e3f257dd4a0bda44c9e0a6a367db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "607f6772175b86cac821de25b1b00ed40a23e3f257dd4a0bda44c9e0a6a367db", kill_on_drop: false }`
[INFO] [stdout] 607f6772175b86cac821de25b1b00ed40a23e3f257dd4a0bda44c9e0a6a367db
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1775513b9299c6d976dd77fdf6574b8d06a1a5299879515cfb478424b3ec703
[INFO] running `Command { std: "docker" "start" "-a" "c1775513b9299c6d976dd77fdf6574b8d06a1a5299879515cfb478424b3ec703", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/program.rs:77:75
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[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] 77 -         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stdout] 77 +         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| cell).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rustkernel v0.0.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/program.rs:77:75
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[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] 77 -         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stdout] 77 +         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| cell).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "c1775513b9299c6d976dd77fdf6574b8d06a1a5299879515cfb478424b3ec703", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1775513b9299c6d976dd77fdf6574b8d06a1a5299879515cfb478424b3ec703", kill_on_drop: false }`
[INFO] [stdout] c1775513b9299c6d976dd77fdf6574b8d06a1a5299879515cfb478424b3ec703
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a839d8d7ba5e8e33893ec69d773f29c30eade27cc51ff0e74a73062b6c21253b
[INFO] running `Command { std: "docker" "start" "-a" "a839d8d7ba5e8e33893ec69d773f29c30eade27cc51ff0e74a73062b6c21253b", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/program.rs:77:75
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stderr]    |                                                                           ^    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 77 -         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stderr] 77 +         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| cell).collect();
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `rustkernel` (lib) generated 1 warning (run `cargo fix --lib -p rustkernel` to apply 1 suggestion)
[INFO] [stderr] warning: `rustkernel` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustkernel-591bd8248f1577f1)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustkernel-c6b410f3f352d303)
[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] [stderr]    Doc-tests rustkernel
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]   --> src/program.rs:77:75
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stderr]    |                                                                           ^    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 77 -         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| (cell)).collect();
[INFO] [stderr] 77 +         let mut cells_vec: Vec<&Cell> = self.cells.iter().map(|(_, cell)| cell).collect();
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "a839d8d7ba5e8e33893ec69d773f29c30eade27cc51ff0e74a73062b6c21253b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a839d8d7ba5e8e33893ec69d773f29c30eade27cc51ff0e74a73062b6c21253b", kill_on_drop: false }`
[INFO] [stdout] a839d8d7ba5e8e33893ec69d773f29c30eade27cc51ff0e74a73062b6c21253b