[INFO] fetching crate twiggy-parser 0.6.0...
[INFO] checking twiggy-parser-0.6.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate twiggy-parser 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate twiggy-parser 0.6.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate twiggy-parser 0.6.0
[INFO] finished tweaking crates.io crate twiggy-parser 0.6.0
[INFO] tweaked toml for crates.io crate twiggy-parser 0.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 745dcd6e3531d086b97d750d9961946223c786760e56bae77a977c5df694c68e
[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" "745dcd6e3531d086b97d750d9961946223c786760e56bae77a977c5df694c68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "745dcd6e3531d086b97d750d9961946223c786760e56bae77a977c5df694c68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "745dcd6e3531d086b97d750d9961946223c786760e56bae77a977c5df694c68e", kill_on_drop: false }`
[INFO] [stdout] 745dcd6e3531d086b97d750d9961946223c786760e56bae77a977c5df694c68e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e93e95c91aaf2c5623588d32a3c4b016621cb4c8dd2eb6a4cf20fd05ba4e25b4
[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" "e93e95c91aaf2c5623588d32a3c4b016621cb4c8dd2eb6a4cf20fd05ba4e25b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]     Checking frozen v1.0.0
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking wasmparser v0.31.1
[INFO] [stderr]     Checking parity-wasm v0.38.0
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling cpp_demangle v0.2.16
[INFO] [stderr]     Checking thread_local v1.1.2
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking gimli v0.18.0
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking goblin v0.0.22
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking object v0.12.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking twiggy-ir v0.6.0
[INFO] [stderr]     Checking twiggy-traits v0.6.0
[INFO] [stderr]     Checking twiggy-parser v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.92s
[INFO] running `Command { std: "docker" "inspect" "e93e95c91aaf2c5623588d32a3c4b016621cb4c8dd2eb6a4cf20fd05ba4e25b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e93e95c91aaf2c5623588d32a3c4b016621cb4c8dd2eb6a4cf20fd05ba4e25b4", kill_on_drop: false }`
[INFO] [stdout] e93e95c91aaf2c5623588d32a3c4b016621cb4c8dd2eb6a4cf20fd05ba4e25b4