[INFO] fetching crate malloc_freq 0.1.2...
[INFO] testing malloc_freq-0.1.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate malloc_freq 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate malloc_freq 0.1.2 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 malloc_freq 0.1.2
[INFO] finished tweaking crates.io crate malloc_freq 0.1.2
[INFO] tweaked toml for crates.io crate malloc_freq 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate malloc_freq 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] b142c04047f6166447056d6ede64a08f9987c101c1b8c910bc4bba9b87f3f725
[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" "b142c04047f6166447056d6ede64a08f9987c101c1b8c910bc4bba9b87f3f725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b142c04047f6166447056d6ede64a08f9987c101c1b8c910bc4bba9b87f3f725", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b142c04047f6166447056d6ede64a08f9987c101c1b8c910bc4bba9b87f3f725", kill_on_drop: false }`
[INFO] [stdout] b142c04047f6166447056d6ede64a08f9987c101c1b8c910bc4bba9b87f3f725
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] e42ae6991201c63089cb0dffd57ae0b702c6103ab9c741a9b60e78881188ee64
[INFO] running `Command { std: "docker" "start" "-a" "e42ae6991201c63089cb0dffd57ae0b702c6103ab9c741a9b60e78881188ee64", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling args v2.2.0
[INFO] [stderr]    Compiling num-format v0.4.0
[INFO] [stderr]    Compiling object v0.26.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling serde_yaml v0.8.17
[INFO] [stderr]    Compiling malloc_freq v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.54s
[INFO] running `Command { std: "docker" "inspect" "e42ae6991201c63089cb0dffd57ae0b702c6103ab9c741a9b60e78881188ee64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e42ae6991201c63089cb0dffd57ae0b702c6103ab9c741a9b60e78881188ee64", kill_on_drop: false }`
[INFO] [stdout] e42ae6991201c63089cb0dffd57ae0b702c6103ab9c741a9b60e78881188ee64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 7e2e50dc0bc925f077cf17a2ae51acd7364c052eef9abcfa526519215d1a1f08
[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" "7e2e50dc0bc925f077cf17a2ae51acd7364c052eef9abcfa526519215d1a1f08", kill_on_drop: false }`
[INFO] [stderr]    Compiling malloc_freq v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "7e2e50dc0bc925f077cf17a2ae51acd7364c052eef9abcfa526519215d1a1f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2e50dc0bc925f077cf17a2ae51acd7364c052eef9abcfa526519215d1a1f08", kill_on_drop: false }`
[INFO] [stdout] 7e2e50dc0bc925f077cf17a2ae51acd7364c052eef9abcfa526519215d1a1f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] c683ff71b21c2cdbe670651c3e2e66d486297e1b5310c916d773c37009eaf19a
[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" "c683ff71b21c2cdbe670651c3e2e66d486297e1b5310c916d773c37009eaf19a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/malloc_freq-d9041ad480235bc4)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] failed to write malloc profile: No such file or directory (os error 2)
[INFO] [stdout] test tests::alloc_vectors ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.02s
[INFO] [stdout] 
[INFO] [stderr] failed to write malloc profile: No such file or directory (os error 2)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mf_print-fb4ffb05affe2e22)
[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 malloc_freq
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 20) ... ok
[INFO] [stdout] test src/lib.rs - ProfAllocator (line 464) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.70s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c683ff71b21c2cdbe670651c3e2e66d486297e1b5310c916d773c37009eaf19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c683ff71b21c2cdbe670651c3e2e66d486297e1b5310c916d773c37009eaf19a", kill_on_drop: false }`
[INFO] [stdout] c683ff71b21c2cdbe670651c3e2e66d486297e1b5310c916d773c37009eaf19a