[INFO] fetching crate rust_linked_list 0.1.0...
[INFO] testing rust_linked_list-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate rust_linked_list 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rust_linked_list 0.1.0
[INFO] finished tweaking crates.io crate rust_linked_list 0.1.0
[INFO] tweaked toml for crates.io crate rust_linked_list 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_linked_list 0.1.0 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 rust_linked_list 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9a6526891a0e856105f35ee9ad9c7a5a84b56b5b768f1a3fd8c5a3435ccebeca
[INFO] running `Command { std: "docker" "start" "-a" "9a6526891a0e856105f35ee9ad9c7a5a84b56b5b768f1a3fd8c5a3435ccebeca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a6526891a0e856105f35ee9ad9c7a5a84b56b5b768f1a3fd8c5a3435ccebeca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a6526891a0e856105f35ee9ad9c7a5a84b56b5b768f1a3fd8c5a3435ccebeca", kill_on_drop: false }`
[INFO] [stdout] 9a6526891a0e856105f35ee9ad9c7a5a84b56b5b768f1a3fd8c5a3435ccebeca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 116075652aacf9e644ed809d7de4c13d759b159da60ed0866799e8ede3fc79e4
[INFO] running `Command { std: "docker" "start" "-a" "116075652aacf9e644ed809d7de4c13d759b159da60ed0866799e8ede3fc79e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "116075652aacf9e644ed809d7de4c13d759b159da60ed0866799e8ede3fc79e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116075652aacf9e644ed809d7de4c13d759b159da60ed0866799e8ede3fc79e4", kill_on_drop: false }`
[INFO] [stdout] 116075652aacf9e644ed809d7de4c13d759b159da60ed0866799e8ede3fc79e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] db1a12fb5de589c1f4eaa38174deb9b4ebff95568d655c5d6ed31a6850936962
[INFO] running `Command { std: "docker" "start" "-a" "db1a12fb5de589c1f4eaa38174deb9b4ebff95568d655c5d6ed31a6850936962", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust_linked_list v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "db1a12fb5de589c1f4eaa38174deb9b4ebff95568d655c5d6ed31a6850936962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db1a12fb5de589c1f4eaa38174deb9b4ebff95568d655c5d6ed31a6850936962", kill_on_drop: false }`
[INFO] [stdout] db1a12fb5de589c1f4eaa38174deb9b4ebff95568d655c5d6ed31a6850936962
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b8b07a547fc51f7b8c6b2282a0fd94ffdd824eb3edf0dd43e931cc351d42f66e
[INFO] running `Command { std: "docker" "start" "-a" "b8b07a547fc51f7b8c6b2282a0fd94ffdd824eb3edf0dd43e931cc351d42f66e", 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/rust_linked_list-6048973b5375ce69)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test queue::test::basics ... ok
[INFO] [stdout] test queue::test::into_iter ... ok
[INFO] [stdout] test immutable_list::tests::creates_an_empty_list ... ok
[INFO] [stdout] test immutable_list::tests::iter ... ok
[INFO] [stdout] test queue::test::iter_mut ... ok
[INFO] [stdout] test queue::test::iter ... ok
[INFO] [stdout] test immutable_list::tests::tail ... ok
[INFO] [stdout] test stack::tests::creates_an_empty_list ... ok
[INFO] [stdout] test queue::test::peek ... ok
[INFO] [stdout] test immutable_list::tests::pushes_element ... ok
[INFO] [stdout] test stack::tests::iter ... ok
[INFO] [stdout] test stack::tests::into_iter ... ok
[INFO] [stdout] test stack::tests::pops ... ok
[INFO] [stdout] test stack::tests::pops_empty ... ok
[INFO] [stdout] test stack::tests::iter_mut ... ok
[INFO] [stdout] test stack::tests::peek ... ok
[INFO] [stderr]    Doc-tests rust_linked_list
[INFO] [stdout] test stack::tests::pushes_element ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[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" "b8b07a547fc51f7b8c6b2282a0fd94ffdd824eb3edf0dd43e931cc351d42f66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8b07a547fc51f7b8c6b2282a0fd94ffdd824eb3edf0dd43e931cc351d42f66e", kill_on_drop: false }`
[INFO] [stdout] b8b07a547fc51f7b8c6b2282a0fd94ffdd824eb3edf0dd43e931cc351d42f66e