[INFO] cloning repository https://github.com/comprakt/comprakt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/comprakt/comprakt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2315e85972e63ea327c4d115ffe623253b520440
[INFO] testing comprakt/comprakt against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomprakt%2Fcomprakt" "/workspace/builds/worker-49/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-49/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comprakt/comprakt on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-49/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/comprakt/comprakt
[INFO] finished tweaking git repo https://github.com/comprakt/comprakt
[INFO] tweaked toml for git repo https://github.com/comprakt/comprakt written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate git repo https://github.com/comprakt/comprakt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: /workspace/builds/worker-49/source/compiler-cli/Cargo.toml: the cargo feature `default-run` has been stabilized in the 1.37 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-default-run-field for more information about using this feature.
[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 strum v0.11.0
[INFO] [stderr]   Downloaded streaming-stats v0.2.2
[INFO] [stderr]   Downloaded bindgen v0.42.3
[INFO] [stderr]   Downloaded bit-set v0.2.0
[INFO] [stderr]   Downloaded levenshtein v1.0.3
[INFO] [stderr]   Downloaded libc-extra v0.3.2
[INFO] [stderr]   Downloaded rocket_codegen v0.4.0
[INFO] [stderr]   Downloaded rocket_http v0.4.0
[INFO] [stderr]   Downloaded rocket_contrib v0.4.0
[INFO] [stderr]   Downloaded const-cstr-fork v0.2.2
[INFO] [stderr]   Downloaded gcollections v1.4.0
[INFO] [stderr]   Downloaded priority-queue v0.5.2
[INFO] [stderr]   Downloaded cc v1.0.27
[INFO] [stderr]   Downloaded rocket v0.4.0
[INFO] [stderr]   Downloaded strum_macros v0.12.0
[INFO] [stderr]   Downloaded intervallum v1.3.0
[INFO] [stderr]   Downloaded trilean v1.0.1
[INFO] [stderr]   Downloaded indexmap v0.4.1
[INFO] [stderr]   Downloaded shell-words v0.1.0
[INFO] [stderr]   Downloaded strum_macros v0.11.0
[INFO] [stderr]   Downloaded cexpr v0.3.3
[INFO] [stderr]   Downloaded clang-sys v0.26.3
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72173904902da49adb21612b275be479dfbc866da4a3e8efa2ccc238dc668e4a
[INFO] running `Command { std: "docker" "start" "-a" "72173904902da49adb21612b275be479dfbc866da4a3e8efa2ccc238dc668e4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72173904902da49adb21612b275be479dfbc866da4a3e8efa2ccc238dc668e4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72173904902da49adb21612b275be479dfbc866da4a3e8efa2ccc238dc668e4a", kill_on_drop: false }`
[INFO] [stdout] 72173904902da49adb21612b275be479dfbc866da4a3e8efa2ccc238dc668e4a
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6416fb9f44ac556c284d33b7cb66732f884288a884580d94e450da6c682f7aa
[INFO] running `Command { std: "docker" "start" "-a" "c6416fb9f44ac556c284d33b7cb66732f884288a884580d94e450da6c682f7aa", kill_on_drop: false }`
[INFO] [stderr] warning: /opt/rustwide/workdir/compiler-cli/Cargo.toml: the cargo feature `default-run` has been stabilized in the 1.37 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-default-run-field for more information about using this feature.
[INFO] [stderr] warning: compiler-cli v0.0.1 (/opt/rustwide/workdir/compiler-cli) ignoring invalid dependency `inspect-ast` which is missing a lib target
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling cc v1.0.27
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.11
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling bindgen v0.42.3
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling strum v0.11.0
[INFO] [stderr]    Compiling inflections v1.1.1
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling levenshtein v1.0.3
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling trilean v1.0.1
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling indexmap v0.4.1
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling shell-words v0.1.0
[INFO] [stderr]    Compiling clang-sys v0.26.3
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]    Compiling crossbeam-utils v0.6.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling streaming-stats v0.2.2
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling base64 v0.10.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bit-set v0.2.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling priority-queue v0.5.2
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling yaml-rust v0.4.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr] error: could not compile `cc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cc /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cc-1.0.27/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=ebc837431fb6d315 -C extra-filename=-ebc837431fb6d315 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid` (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" "c6416fb9f44ac556c284d33b7cb66732f884288a884580d94e450da6c682f7aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6416fb9f44ac556c284d33b7cb66732f884288a884580d94e450da6c682f7aa", kill_on_drop: false }`
[INFO] [stdout] c6416fb9f44ac556c284d33b7cb66732f884288a884580d94e450da6c682f7aa