[INFO] fetching crate qcell 0.4.2...
[INFO] testing qcell-0.4.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate qcell 0.4.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate qcell 0.4.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qcell 0.4.2
[INFO] finished tweaking crates.io crate qcell 0.4.2
[INFO] tweaked toml for crates.io crate qcell 0.4.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trybuild v1.0.45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", 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] a8b58f933620dfb2bc5bdffda15bea8c647a736fa7e6acbd1c451d7f323cd21c
[INFO] running `Command { std: "docker" "start" "-a" "a8b58f933620dfb2bc5bdffda15bea8c647a736fa7e6acbd1c451d7f323cd21c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8b58f933620dfb2bc5bdffda15bea8c647a736fa7e6acbd1c451d7f323cd21c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8b58f933620dfb2bc5bdffda15bea8c647a736fa7e6acbd1c451d7f323cd21c", kill_on_drop: false }`
[INFO] [stdout] a8b58f933620dfb2bc5bdffda15bea8c647a736fa7e6acbd1c451d7f323cd21c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--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] b256d7067e608f0d734992d6a0d7ca5b363d2200664d031e146f73cee7fd5ee0
[INFO] running `Command { std: "docker" "start" "-a" "b256d7067e608f0d734992d6a0d7ca5b363d2200664d031e146f73cee7fd5ee0", kill_on_drop: false }`
[INFO] [stderr]    Compiling qcell v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "b256d7067e608f0d734992d6a0d7ca5b363d2200664d031e146f73cee7fd5ee0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b256d7067e608f0d734992d6a0d7ca5b363d2200664d031e146f73cee7fd5ee0", kill_on_drop: false }`
[INFO] [stdout] b256d7067e608f0d734992d6a0d7ca5b363d2200664d031e146f73cee7fd5ee0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb0b5e1a5b593f03dbcd498673b5aab081bb8af0ee4b544bae0b81aaa78daa1e
[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" "cb0b5e1a5b593f03dbcd498673b5aab081bb8af0ee4b544bae0b81aaa78daa1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam v0.7.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling trybuild v1.0.45
[INFO] [stderr]    Compiling qcell v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.97s
[INFO] running `Command { std: "docker" "inspect" "cb0b5e1a5b593f03dbcd498673b5aab081bb8af0ee4b544bae0b81aaa78daa1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb0b5e1a5b593f03dbcd498673b5aab081bb8af0ee4b544bae0b81aaa78daa1e", kill_on_drop: false }`
[INFO] [stdout] cb0b5e1a5b593f03dbcd498673b5aab081bb8af0ee4b544bae0b81aaa78daa1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 86f4e7da756522d992ec62dd07360128483acc94b7fcce5854d70fcb00e55178
[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" "86f4e7da756522d992ec62dd07360128483acc94b7fcce5854d70fcb00e55178", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/qcell-d1b84ff5dab1ae34)
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test lcell::tests::lcell ... ok
[INFO] [stdout] test lcell::tests::lcell_unsized ... ok
[INFO] [stdout] test qcell::tests::qcell ... ok
[INFO] [stdout] test tcell::tests::tcell_unsized ... ok
[INFO] [stdout] test qcell::tests::qcell_sep_ids ... ok
[INFO] [stdout] test tcell::tests::tcell_singleton_2 ... ok
[INFO] [stdout] test tlcell::tests::tlcell ... ok
[INFO] [stdout] test qcell::tests::qcell_ids ... ok
[INFO] [stdout] test tlcell::tests::tlcell_singleton_3 ... ok
[INFO] [stdout] test tlcell::tests::tlcell_singleton_2 ... ok
[INFO] [stdout] test tcell::tests::tcell ... ok
[INFO] [stdout] test qcell::tests::qcell_unsized ... ok
[INFO] [stdout] test tlcell::tests::tlcell_unsized ... ok
[INFO] [stdout] test qcell::tests::qcell_fast_ids ... ok
[INFO] [stdout] test tlcell::tests::tlcell_threads ... ok
[INFO] [stdout] test tcell::tests::tcell_singleton_3 ... ok
[INFO] [stdout] test tcell::tests::tcell_singleton_try_new ... ok
[INFO] [stdout] test lcell::tests::lcell_rw2 - should panic ... ok
[INFO] [stdout] test lcell::tests::lcell_rw3_2 - should panic ... ok
[INFO] [stdout] test tlcell::tests::tlcell_singleton_1 - should panic ... ok
[INFO] [stdout] test lcell::tests::lcell_rw3_3 - should panic ... ok
[INFO] [stdout] test lcell::tests::lcell_rw3_1 - should panic ... ok
[INFO] [stdout] test tcell::tests::tcell_threads - should panic ... ok
[INFO] [stdout] test tcell::tests::tcell_singleton_1 - should panic ... ok
[INFO] [stdout] test tcell::tests::tcell_wait_for_new_in_100_threads ... ok
[INFO] [stdout] test tcell::tests::tcell_wait_for_new_timeout ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests qcell
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name qcell --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-066bf20dbcb16896.rlib --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-9fffd75946fb8778.rlib --extern qcell=/opt/rustwide/target/debug/deps/libqcell-157b9bafaa20104f.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-18e16905690305ac.rlib --extern rustversion=/opt/rustwide/target/debug/deps/librustversion-a301340880844ea0.so --extern trybuild=/opt/rustwide/target/debug/deps/libtrybuild-9b22248b12e033e2.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "86f4e7da756522d992ec62dd07360128483acc94b7fcce5854d70fcb00e55178", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86f4e7da756522d992ec62dd07360128483acc94b7fcce5854d70fcb00e55178", kill_on_drop: false }`
[INFO] [stdout] 86f4e7da756522d992ec62dd07360128483acc94b7fcce5854d70fcb00e55178