[INFO] fetching crate rollercoaster 0.0.4...
[INFO] testing rollercoaster-0.0.4 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate rollercoaster 0.0.4 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate rollercoaster 0.0.4
[INFO] finished tweaking crates.io crate rollercoaster 0.0.4
[INFO] tweaked toml for crates.io crate rollercoaster 0.0.4 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rollercoaster 0.0.4 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ceb2ffb96abc341ae55e3634e96dced4a51add75c2e81b0991d911702c05442
[INFO] running `Command { std: "docker" "start" "-a" "4ceb2ffb96abc341ae55e3634e96dced4a51add75c2e81b0991d911702c05442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ceb2ffb96abc341ae55e3634e96dced4a51add75c2e81b0991d911702c05442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ceb2ffb96abc341ae55e3634e96dced4a51add75c2e81b0991d911702c05442", kill_on_drop: false }`
[INFO] [stdout] 4ceb2ffb96abc341ae55e3634e96dced4a51add75c2e81b0991d911702c05442
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d66bc428c7818b7a6c3471ea46591651f98c5741c57201462035de93be8ba5e
[INFO] running `Command { std: "docker" "start" "-a" "2d66bc428c7818b7a6c3471ea46591651f98c5741c57201462035de93be8ba5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rollercoaster v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "2d66bc428c7818b7a6c3471ea46591651f98c5741c57201462035de93be8ba5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d66bc428c7818b7a6c3471ea46591651f98c5741c57201462035de93be8ba5e", kill_on_drop: false }`
[INFO] [stdout] 2d66bc428c7818b7a6c3471ea46591651f98c5741c57201462035de93be8ba5e
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a783a17c0f9cb14c6f007ac363e341442610cca3f849db70c702e5fdad892bf
[INFO] running `Command { std: "docker" "start" "-a" "7a783a17c0f9cb14c6f007ac363e341442610cca3f849db70c702e5fdad892bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling rollercoaster v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "7a783a17c0f9cb14c6f007ac363e341442610cca3f849db70c702e5fdad892bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a783a17c0f9cb14c6f007ac363e341442610cca3f849db70c702e5fdad892bf", kill_on_drop: false }`
[INFO] [stdout] 7a783a17c0f9cb14c6f007ac363e341442610cca3f849db70c702e5fdad892bf
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 499d3bfabbb6abb944e5a04526bc0afbd3068480e5f2eada05f396cf2d3959fe
[INFO] running `Command { std: "docker" "start" "-a" "499d3bfabbb6abb944e5a04526bc0afbd3068480e5f2eada05f396cf2d3959fe", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rollercoaster-60a9adac5b1438db)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test grouping::test::it_groups_correctly ... ok
[INFO] [stdout] test concat::test::it_concats_both_ways ... ok
[INFO] [stdout] test memory::test::it_remembers ... ok
[INFO] [stdout] test unique::test::it_returns_unique ... ok
[INFO] [stderr]    Doc-tests rollercoaster
[INFO] [stdout] test memory::test::it_forgets ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - Rollercoaster::prepend (line 10) ... ok
[INFO] [stdout] test src/lib.rs - Rollercoaster::memory (line 26) ... ok
[INFO] [stdout] test src/lib.rs - Rollercoaster::unique_by (line 17) ... ok
[INFO] [stdout] test src/lib.rs - Rollercoaster (line 11) ... ok
[INFO] [stdout] test src/lib.rs - Rollercoaster::append (line 10) ... ok
[INFO] [stdout] test src/lib.rs - Rollercoaster::group_by (line 16) ... ok
[INFO] [stdout] test src/lib.rs - Rollercoaster::unique (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.99s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "499d3bfabbb6abb944e5a04526bc0afbd3068480e5f2eada05f396cf2d3959fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "499d3bfabbb6abb944e5a04526bc0afbd3068480e5f2eada05f396cf2d3959fe", kill_on_drop: false }`
[INFO] [stdout] 499d3bfabbb6abb944e5a04526bc0afbd3068480e5f2eada05f396cf2d3959fe