[INFO] cloning repository https://github.com/freesig/pixel_chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/freesig/pixel_chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffreesig%2Fpixel_chain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffreesig%2Fpixel_chain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82250cc38b9f39939c9f2906a3346a8e030c8c4f
[INFO] checking freesig/pixel_chain against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffreesig%2Fpixel_chain" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/freesig/pixel_chain on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/freesig/pixel_chain
[INFO] finished tweaking git repo https://github.com/freesig/pixel_chain
[INFO] tweaked toml for git repo https://github.com/freesig/pixel_chain written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/freesig/pixel_chain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62e994751dfb510ecc91027da9a0575c7f1c7cf8cb012a09cddba204c1bc1fd9
[INFO] running `Command { std: "docker" "start" "-a" "62e994751dfb510ecc91027da9a0575c7f1c7cf8cb012a09cddba204c1bc1fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62e994751dfb510ecc91027da9a0575c7f1c7cf8cb012a09cddba204c1bc1fd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e994751dfb510ecc91027da9a0575c7f1c7cf8cb012a09cddba204c1bc1fd9", kill_on_drop: false }`
[INFO] [stdout] 62e994751dfb510ecc91027da9a0575c7f1c7cf8cb012a09cddba204c1bc1fd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79bb45206f8b8fc7692f77300d014c3508d0bc351192dbd4cfb4bcaf51b7b659
[INFO] running `Command { std: "docker" "start" "-a" "79bb45206f8b8fc7692f77300d014c3508d0bc351192dbd4cfb4bcaf51b7b659", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling serde v1.0.93
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]     Checking opaque-debug v0.2.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling subtle v2.1.0
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking keccak v0.1.0
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.1
[INFO] [stderr]     Checking rustc-hex v2.0.1
[INFO] [stderr]     Checking hash-db v0.12.4
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking static_assertions v0.2.5
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]     Checking memory_units v0.3.0
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking base58 v0.1.0
[INFO] [stderr]     Checking hashmap_core v0.1.10
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking arrayref v0.3.5
[INFO] [stderr]     Checking environmental v1.0.1
[INFO] [stderr]     Checking integer-sqrt v0.1.2
[INFO] [stderr]     Checking bitmask v0.5.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]     Checking regex-syntax v0.6.7
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking block-padding v0.1.4
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.31
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking trie-root v0.12.4
[INFO] [stderr]     Checking parity-wasm v0.31.3
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.7/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=d9afeacc0d1ab6d2 -C extra-filename=-d9afeacc0d1ab6d2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern ucd_util=/opt/rustwide/target/debug/deps/libucd_util-32f182af8d1803e6.rmeta --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" "79bb45206f8b8fc7692f77300d014c3508d0bc351192dbd4cfb4bcaf51b7b659", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79bb45206f8b8fc7692f77300d014c3508d0bc351192dbd4cfb4bcaf51b7b659", kill_on_drop: false }`
[INFO] [stdout] 79bb45206f8b8fc7692f77300d014c3508d0bc351192dbd4cfb4bcaf51b7b659