[INFO] cloning repository https://github.com/zenria/co2-meter-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zenria/co2-meter-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzenria%2Fco2-meter-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzenria%2Fco2-meter-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ad0ab49b5a3e94ddd151ac6fc82dbbeee9fdbf13
[INFO] testing zenria/co2-meter-rs against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzenria%2Fco2-meter-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zenria/co2-meter-rs on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zenria/co2-meter-rs
[INFO] finished tweaking git repo https://github.com/zenria/co2-meter-rs
[INFO] tweaked toml for git repo https://github.com/zenria/co2-meter-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/zenria/co2-meter-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/zenria/serialport-rs.git`
[INFO] [stderr]     Updating git repository `https://github.com/zenria/nix.git`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/libc`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_more v0.13.0
[INFO] [stderr]   Downloaded mh-z19 v0.3.1
[INFO] [stderr]   Downloaded rustls v0.14.0
[INFO] [stderr]   Downloaded tokio-rustls v0.8.1
[INFO] [stderr]   Downloaded mqtt311 v0.2.0
[INFO] [stderr]   Downloaded rumqtt v0.30.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e264a19683f8d99a682cb429f5d10caf747bb804dce4db4243e594a7f4832ef
[INFO] running `Command { std: "docker" "start" "-a" "8e264a19683f8d99a682cb429f5d10caf747bb804dce4db4243e594a7f4832ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e264a19683f8d99a682cb429f5d10caf747bb804dce4db4243e594a7f4832ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e264a19683f8d99a682cb429f5d10caf747bb804dce4db4243e594a7f4832ef", kill_on_drop: false }`
[INFO] [stdout] 8e264a19683f8d99a682cb429f5d10caf747bb804dce4db4243e594a7f4832ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd1538b9e09a963bd45c886c08e1796cd43fd9ec038e59e4e19e3ef36dc2d1fe
[INFO] running `Command { std: "docker" "start" "-a" "dd1538b9e09a963bd45c886c08e1796cd43fd9ec038e59e4e19e3ef36dc2d1fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling futures v0.1.29
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling tinyvec v0.3.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling libc v0.2.71 (https://github.com/rust-lang/libc#3118fb45)
[INFO] [stderr]    Compiling nix v0.13.0 (https://github.com/zenria/nix.git#1135b648)
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling chunked_transfer v0.3.1
[INFO] [stderr]    Compiling ascii v0.8.7
[INFO] [stderr]    Compiling mh-z19 v0.3.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicode-normalization v0.1.13
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling twoway v0.1.8
[INFO] [stderr]    Compiling buf_redux v0.8.4
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling tokio-sync v0.1.8
[INFO] [stderr]    Compiling gzip-header v0.3.0
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling filetime v0.2.10
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling tokio-executor v0.1.10
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling parking_lot v0.9.0
[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-0.6.18/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 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=93c14007ae22b74c -C extra-filename=-93c14007ae22b74c --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" "dd1538b9e09a963bd45c886c08e1796cd43fd9ec038e59e4e19e3ef36dc2d1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd1538b9e09a963bd45c886c08e1796cd43fd9ec038e59e4e19e3ef36dc2d1fe", kill_on_drop: false }`
[INFO] [stdout] dd1538b9e09a963bd45c886c08e1796cd43fd9ec038e59e4e19e3ef36dc2d1fe