[INFO] fetching crate mbox 0.6.0...
[INFO] testing mbox-0.6.0 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate mbox 0.6.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mbox 0.6.0 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mbox 0.6.0
[INFO] finished tweaking crates.io crate mbox 0.6.0
[INFO] tweaked toml for crates.io crate mbox 0.6.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9aeac56a0eae0d047a11ab2c16b2bf201a94589fd4244e17576c3e9c94f40f3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c9aeac56a0eae0d047a11ab2c16b2bf201a94589fd4244e17576c3e9c94f40f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9aeac56a0eae0d047a11ab2c16b2bf201a94589fd4244e17576c3e9c94f40f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9aeac56a0eae0d047a11ab2c16b2bf201a94589fd4244e17576c3e9c94f40f3", kill_on_drop: false }`
[INFO] [stdout] c9aeac56a0eae0d047a11ab2c16b2bf201a94589fd4244e17576c3e9c94f40f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18af998d4ff136991832fa5ad45d93c9ad60cb6ad0f1154cb0c4e9fdb4e1b3d8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "18af998d4ff136991832fa5ad45d93c9ad60cb6ad0f1154cb0c4e9fdb4e1b3d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling mbox v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "18af998d4ff136991832fa5ad45d93c9ad60cb6ad0f1154cb0c4e9fdb4e1b3d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18af998d4ff136991832fa5ad45d93c9ad60cb6ad0f1154cb0c4e9fdb4e1b3d8", kill_on_drop: false }`
[INFO] [stdout] 18af998d4ff136991832fa5ad45d93c9ad60cb6ad0f1154cb0c4e9fdb4e1b3d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dd7c3abd0578de3196f7ee8cb2f621d6b7d5be62eed6a33991d94912c3b0116a
[INFO] running `Command { std: "docker" "start" "-a" "dd7c3abd0578de3196f7ee8cb2f621d6b7d5be62eed6a33991d94912c3b0116a", kill_on_drop: false }`
[INFO] [stderr]    Compiling mbox v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "dd7c3abd0578de3196f7ee8cb2f621d6b7d5be62eed6a33991d94912c3b0116a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd7c3abd0578de3196f7ee8cb2f621d6b7d5be62eed6a33991d94912c3b0116a", kill_on_drop: false }`
[INFO] [stdout] dd7c3abd0578de3196f7ee8cb2f621d6b7d5be62eed6a33991d94912c3b0116a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 782a4ca1137234d3c5ba10f8ef722674404f9ab7b00986f35695687da5315f2e
[INFO] running `Command { std: "docker" "start" "-a" "782a4ca1137234d3c5ba10f8ef722674404f9ab7b00986f35695687da5315f2e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mbox-6317bab354c2168e)
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test mbox::test_clone ... ok
[INFO] [stdout] test mbox::test_clone_from ... ok
[INFO] [stdout] test mbox::test_clone_slice ... ok
[INFO] [stdout] test mbox::test_coerce_from_empty_slice ... ok
[INFO] [stdout] test mbox::test_coerce_unsized ... ok
[INFO] [stdout] test mbox::test_default_str ... ok
[INFO] [stdout] test mbox::test_empty_slice ... ok
[INFO] [stdout] test mbox::test_format ... ok
[INFO] [stdout] test mbox::test_from_iterator ... ok
[INFO] [stdout] test mbox::test_into_iterator ... ok
[INFO] [stdout] test mbox::test_into_raw ... ok
[INFO] [stdout] test mbox::test_iter_drop ... ok
[INFO] [stdout] test mbox::test_iter_properties ... ok
[INFO] [stdout] test mbox::test_no_drop_flag ... ok
[INFO] [stdout] test mbox::test_non_utf8 ... ok
[INFO] [stdout] test mbox::test_non_zero ... ok
[INFO] [stdout] test mbox::test_single_object ... ok
[INFO] [stdout] test mbox::test_slice ... ok
[INFO] [stdout] test mbox::test_slice_with_drops ... ok
[INFO] [stdout] test mbox::test_string_from_bytes ... ok
[INFO] [stdout] test mbox::test_standard_traits ... ok
[INFO] [stdout] test mbox::test_zero_sized_type ... ok
[INFO] [stdout] test mbox::test_zst_slice ... ok
[INFO] [stdout] test sentinel::test_array ... ok
[INFO] [stdout] test sentinel::test_array_into_mbox ... ok
[INFO] [stdout] test sentinel::test_array_with_drop ... ok
[INFO] [stdout] test sentinel::test_c_str ... ok
[INFO] [stdout] test sentinel::test_default_string ... ok
[INFO] [stdout] test sentinel::test_default_array ... ok
[INFO] [stdout] test sentinel::test_hash_string ... ok
[INFO] [stdout] test sentinel::test_hash_array ... ok
[INFO] [stdout] test sentinel::test_string_into_mbox ... ok
[INFO] [stdout] test sentinel::test_non_utf8_string ... ok
[INFO] [stdout] test sentinel::test_string ... ok
[INFO] [stdout] test mbox::test_panic_during_clone - should panic ... ok
[INFO] [stdout] test mbox::test_panic_on_clone_slice - should panic ... ok
[INFO] [stdout] test mbox::test_panic_during_clone_from - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 37 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mbox
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "782a4ca1137234d3c5ba10f8ef722674404f9ab7b00986f35695687da5315f2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "782a4ca1137234d3c5ba10f8ef722674404f9ab7b00986f35695687da5315f2e", kill_on_drop: false }`
[INFO] [stdout] 782a4ca1137234d3c5ba10f8ef722674404f9ab7b00986f35695687da5315f2e