[INFO] fetching crate parallel-disk-usage 0.6.1...
[INFO] testing parallel-disk-usage-0.6.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate parallel-disk-usage 0.6.1 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate parallel-disk-usage 0.6.1 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 parallel-disk-usage 0.6.1
[INFO] finished tweaking crates.io crate parallel-disk-usage 0.6.1
[INFO] tweaked toml for crates.io crate parallel-disk-usage 0.6.1 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate crates.io crate parallel-disk-usage 0.6.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.65
[INFO] [stderr]   Downloaded command-extra v1.0.0
[INFO] [stderr]   Downloaded pipe-trait v0.3.2
[INFO] [stderr]   Downloaded rounded-div v0.1.2
[INFO] [stderr]   Downloaded pipe-trait v0.2.1
[INFO] [stderr]   Downloaded structopt-utilities v0.0.8
[INFO] [stderr]   Downloaded text-block-macros v0.1.1
[INFO] [stderr]   Downloaded fmt-iter v0.2.1
[INFO] [stderr]   Downloaded zero-copy-pads v0.2.0
[INFO] [stderr]   Downloaded build-fs-tree v0.3.0
[INFO] [stderr]   Downloaded assert-cmp v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] eed889deefae8f7d47c3aeebb065de200541de9b70430ff4047d006f8f9b9516
[INFO] running `Command { std: "docker" "start" "-a" "eed889deefae8f7d47c3aeebb065de200541de9b70430ff4047d006f8f9b9516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eed889deefae8f7d47c3aeebb065de200541de9b70430ff4047d006f8f9b9516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eed889deefae8f7d47c3aeebb065de200541de9b70430ff4047d006f8f9b9516", kill_on_drop: false }`
[INFO] [stdout] eed889deefae8f7d47c3aeebb065de200541de9b70430ff4047d006f8f9b9516
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] [stdout] 5a3637b9885ac659d237d5d93f982f6f90f188a6a43ca06eb4551de058b054cb
[INFO] running `Command { std: "docker" "start" "-a" "5a3637b9885ac659d237d5d93f982f6f90f188a6a43ca06eb4551de058b054cb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling serde_json v1.0.65
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling pipe-trait v0.2.1
[INFO] [stderr]    Compiling pipe-trait v0.3.2
[INFO] [stderr]    Compiling assert-cmp v0.2.0
[INFO] [stderr]    Compiling rounded-div v0.1.2
[INFO] [stderr]    Compiling text-block-macros v0.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling terminal_size v0.1.17
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling derive_more v0.99.16
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling smart-default v0.6.0
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling derive_builder_core v0.10.2
[INFO] [stderr]    Compiling strum v0.21.0
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling structopt-utilities v0.0.8
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]    Compiling fmt-iter v0.2.1
[INFO] [stderr]    Compiling derive_builder v0.10.2
[INFO] [stderr]    Compiling zero-copy-pads v0.2.0
[INFO] [stderr]    Compiling parallel-disk-usage v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 04s
[INFO] running `Command { std: "docker" "inspect" "5a3637b9885ac659d237d5d93f982f6f90f188a6a43ca06eb4551de058b054cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a3637b9885ac659d237d5d93f982f6f90f188a6a43ca06eb4551de058b054cb", kill_on_drop: false }`
[INFO] [stdout] 5a3637b9885ac659d237d5d93f982f6f90f188a6a43ca06eb4551de058b054cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] 4d5e126118aa29e01bf102c5b33ce1211d655a32fb234b32c46b2abfb3e25c04
[INFO] running `Command { std: "docker" "start" "-a" "4d5e126118aa29e01bf102c5b33ce1211d655a32fb234b32c46b2abfb3e25c04", kill_on_drop: false }`
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling command-extra v1.0.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling pretty_assertions v0.7.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling serde_yaml v0.8.17
[INFO] [stderr]    Compiling build-fs-tree v0.3.0
[INFO] [stderr]    Compiling parallel-disk-usage v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.25s
[INFO] running `Command { std: "docker" "inspect" "4d5e126118aa29e01bf102c5b33ce1211d655a32fb234b32c46b2abfb3e25c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5e126118aa29e01bf102c5b33ce1211d655a32fb234b32c46b2abfb3e25c04", kill_on_drop: false }`
[INFO] [stdout] 4d5e126118aa29e01bf102c5b33ce1211d655a32fb234b32c46b2abfb3e25c04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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] 280e8e302ca6ad4a848d7c4f50c0a3ec2ae5939db828c64b23929a212ecf82ef
[INFO] running `Command { std: "docker" "start" "-a" "280e8e302ca6ad4a848d7c4f50c0a3ec2ae5939db828c64b23929a212ecf82ef", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/parallel_disk_usage-ba0d487e82f87d86)
[INFO] [stdout] running 6 tests
[INFO] [stdout] test reporter::error_report::operation::test_operation::access_entry ... ok
[INFO] [stdout] test reporter::error_report::operation::test_operation::read_directory ... ok
[INFO] [stdout] test reporter::error_report::operation::test_operation::symlink_metadata ... ok
[INFO] [stdout] test reporter::error_report::text_report::test ... ok
[INFO] [stdout] test data_tree::retain::test::edge_cases ... ok
[INFO] [stdout] test data_tree::retain::test::typical_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.98s
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pdu-18c1d3ae2fad5c1e)
[INFO] [stderr]    Doc-tests parallel_disk_usage
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/visualizer.rs - visualizer::Visualizer (line 27) - compile ... ok
[INFO] [stdout] test src/fs_tree_builder.rs - fs_tree_builder::FsTreeBuilder (line 18) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.18s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "280e8e302ca6ad4a848d7c4f50c0a3ec2ae5939db828c64b23929a212ecf82ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280e8e302ca6ad4a848d7c4f50c0a3ec2ae5939db828c64b23929a212ecf82ef", kill_on_drop: false }`
[INFO] [stdout] 280e8e302ca6ad4a848d7c4f50c0a3ec2ae5939db828c64b23929a212ecf82ef