[INFO] fetching crate collections2 0.0.1...
[INFO] testing collections2-0.0.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate collections2 0.0.1 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate collections2 0.0.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e536b0be38b0e870fafdc18862f416237a3d49d9202efe0a6279d81376054468
[INFO] running `Command { std: "docker" "start" "-a" "e536b0be38b0e870fafdc18862f416237a3d49d9202efe0a6279d81376054468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e536b0be38b0e870fafdc18862f416237a3d49d9202efe0a6279d81376054468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e536b0be38b0e870fafdc18862f416237a3d49d9202efe0a6279d81376054468", kill_on_drop: false }`
[INFO] [stdout] e536b0be38b0e870fafdc18862f416237a3d49d9202efe0a6279d81376054468
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f316d392552599e07e9a8ab7511d0d21b4ab88f70ccea2b35e58106cea0d7f7
[INFO] running `Command { std: "docker" "start" "-a" "1f316d392552599e07e9a8ab7511d0d21b4ab88f70ccea2b35e58106cea0d7f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[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] running `Command { std: "docker" "inspect" "1f316d392552599e07e9a8ab7511d0d21b4ab88f70ccea2b35e58106cea0d7f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f316d392552599e07e9a8ab7511d0d21b4ab88f70ccea2b35e58106cea0d7f7", kill_on_drop: false }`
[INFO] [stdout] 1f316d392552599e07e9a8ab7511d0d21b4ab88f70ccea2b35e58106cea0d7f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dff97c99214dc907b24291d7c6b2beeaf32726a22dfe63dc124b0e12b6eb7a6
[INFO] running `Command { std: "docker" "start" "-a" "7dff97c99214dc907b24291d7c6b2beeaf32726a22dfe63dc124b0e12b6eb7a6", kill_on_drop: false }`
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling collections2 v0.0.1 (/opt/rustwide/workdir)
[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)]` (part of `#[warn(unused)]`) 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 `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "7dff97c99214dc907b24291d7c6b2beeaf32726a22dfe63dc124b0e12b6eb7a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dff97c99214dc907b24291d7c6b2beeaf32726a22dfe63dc124b0e12b6eb7a6", kill_on_drop: false }`
[INFO] [stdout] 7dff97c99214dc907b24291d7c6b2beeaf32726a22dfe63dc124b0e12b6eb7a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 21de37ad26c6902949988536072199fdb4c4d806ca6f174091d7194d11da6fa2
[INFO] running `Command { std: "docker" "start" "-a" "21de37ad26c6902949988536072199fdb4c4d806ca6f174091d7194d11da6fa2", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `self::alloc::*`
[INFO] [stderr]    --> src/list.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 | pub use self::alloc::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::std::*`
[INFO] [stderr]    --> src/map.rs:193:9
[INFO] [stderr]     |
[INFO] [stderr] 193 | pub use self::std::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::alloc::*`
[INFO] [stderr]    --> src/map.rs:342:9
[INFO] [stderr]     |
[INFO] [stderr] 342 | pub use self::alloc::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::std::*`
[INFO] [stderr]    --> src/set.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 | pub use self::std::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `collections2` (lib) generated 4 warnings (run `cargo fix --lib -p collections2` to apply 4 suggestions)
[INFO] [stderr] warning: `collections2` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/collections2-66840de646c012c3)
[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 collections2
[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" "21de37ad26c6902949988536072199fdb4c4d806ca6f174091d7194d11da6fa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21de37ad26c6902949988536072199fdb4c4d806ca6f174091d7194d11da6fa2", kill_on_drop: false }`
[INFO] [stdout] 21de37ad26c6902949988536072199fdb4c4d806ca6f174091d7194d11da6fa2