[INFO] fetching crate subfilter 0.3.0...
[INFO] testing subfilter-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate subfilter 0.3.0 into /workspace/builds/worker-108/source
[INFO] validating manifest of crates.io crate subfilter 0.3.0 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 subfilter 0.3.0
[INFO] finished tweaking crates.io crate subfilter 0.3.0
[INFO] tweaked toml for crates.io crate subfilter 0.3.0 written to /workspace/builds/worker-108/source/Cargo.toml
[INFO] crate crates.io crate subfilter 0.3.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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] f17d8f4098327c5d73e68b0c15334e3e783f040e8fb3ddfcb73410f50ca937f7
[INFO] running `Command { std: "docker" "start" "-a" "f17d8f4098327c5d73e68b0c15334e3e783f040e8fb3ddfcb73410f50ca937f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f17d8f4098327c5d73e68b0c15334e3e783f040e8fb3ddfcb73410f50ca937f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f17d8f4098327c5d73e68b0c15334e3e783f040e8fb3ddfcb73410f50ca937f7", kill_on_drop: false }`
[INFO] [stdout] f17d8f4098327c5d73e68b0c15334e3e783f040e8fb3ddfcb73410f50ca937f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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] cef0bb649eadcbad04159b1c0f9778e846551c2fc22ba410aea290f10203d34a
[INFO] running `Command { std: "docker" "start" "-a" "cef0bb649eadcbad04159b1c0f9778e846551c2fc22ba410aea290f10203d34a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling standback v0.2.8
[INFO] [stderr]    Compiling object v0.19.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling encoding_rs v0.8.23
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling ascii v0.7.1
[INFO] [stderr]    Compiling nom v2.1.0
[INFO] [stderr]    Compiling safemem v0.2.0
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling combine v2.5.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling addr2line v0.12.1
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr] error: could not compile `clap`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name clap /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.1/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=030f24a66f03949e -C extra-filename=-030f24a66f03949e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-117d41ac256572da.rmeta --extern textwrap=/opt/rustwide/target/debug/deps/libtextwrap-bad3d17484b64b1a.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-1d2bdd05e197c9de.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cef0bb649eadcbad04159b1c0f9778e846551c2fc22ba410aea290f10203d34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef0bb649eadcbad04159b1c0f9778e846551c2fc22ba410aea290f10203d34a", kill_on_drop: false }`
[INFO] [stdout] cef0bb649eadcbad04159b1c0f9778e846551c2fc22ba410aea290f10203d34a