[INFO] fetching crate collections2 0.0.1...
[INFO] checking collections2-0.0.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate collections2 0.0.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate collections2 0.0.1
[INFO] finished tweaking crates.io crate collections2 0.0.1
[INFO] tweaked toml for crates.io crate collections2 0.0.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate collections2 0.0.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb3abdd37439529b9f8ff42bf0987cd373a79ebd7c17ddd148567d7f10ac4ac2
[INFO] running `Command { std: "docker" "start" "-a" "cb3abdd37439529b9f8ff42bf0987cd373a79ebd7c17ddd148567d7f10ac4ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3abdd37439529b9f8ff42bf0987cd373a79ebd7c17ddd148567d7f10ac4ac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3abdd37439529b9f8ff42bf0987cd373a79ebd7c17ddd148567d7f10ac4ac2", kill_on_drop: false }`
[INFO] [stdout] cb3abdd37439529b9f8ff42bf0987cd373a79ebd7c17ddd148567d7f10ac4ac2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f61e2fe66c9c874f2f8c1a77fb4ffe4f82a79943d1878c4c60b78af3b9b674a
[INFO] running `Command { std: "docker" "start" "-a" "1f61e2fe66c9c874f2f8c1a77fb4ffe4f82a79943d1878c4c60b78af3b9b674a", kill_on_drop: false }`
[INFO] [stderr]     Checking collections2 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::alloc::*`
[INFO] [stdout]    --> src/list.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub use self::alloc::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::std::*`
[INFO] [stdout]    --> src/map.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub use self::std::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::alloc::*`
[INFO] [stdout]    --> src/map.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 | pub use self::alloc::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::std::*`
[INFO] [stdout]    --> src/set.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub use self::std::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::alloc::*`
[INFO] [stdout]    --> src/list.rs:117:9
[INFO] [stdout]     |
[INFO] [stdout] 117 | pub use self::alloc::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::std::*`
[INFO] [stdout]    --> src/map.rs:193:9
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub use self::std::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::alloc::*`
[INFO] [stdout]    --> src/map.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 342 | pub use self::alloc::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::std::*`
[INFO] [stdout]    --> src/set.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub use self::std::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "1f61e2fe66c9c874f2f8c1a77fb4ffe4f82a79943d1878c4c60b78af3b9b674a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f61e2fe66c9c874f2f8c1a77fb4ffe4f82a79943d1878c4c60b78af3b9b674a", kill_on_drop: false }`
[INFO] [stdout] 1f61e2fe66c9c874f2f8c1a77fb4ffe4f82a79943d1878c4c60b78af3b9b674a