[INFO] cloning repository https://github.com/Arquedia/berg2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arquedia/berg2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArquedia%2Fberg2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArquedia%2Fberg2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 461bcff4d1ae3891ba33b8bd7e45af0307d9d22d
[INFO] testing Arquedia/berg2 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArquedia%2Fberg2" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Arquedia/berg2 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Arquedia/berg2
[INFO] finished tweaking git repo https://github.com/Arquedia/berg2
[INFO] tweaked toml for git repo https://github.com/Arquedia/berg2 written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/Arquedia/berg2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d04b314f034d4f1b8bb412c99e410e993b0ebe9a3694e44c6c07d42c964720b
[INFO] running `Command { std: "docker" "start" "-a" "4d04b314f034d4f1b8bb412c99e410e993b0ebe9a3694e44c6c07d42c964720b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d04b314f034d4f1b8bb412c99e410e993b0ebe9a3694e44c6c07d42c964720b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d04b314f034d4f1b8bb412c99e410e993b0ebe9a3694e44c6c07d42c964720b", kill_on_drop: false }`
[INFO] [stdout] 4d04b314f034d4f1b8bb412c99e410e993b0ebe9a3694e44c6c07d42c964720b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfba64c9de34816d3e207846aefa1374b1564c6e6bed391d24aaa3947c71c782
[INFO] running `Command { std: "docker" "start" "-a" "cfba64c9de34816d3e207846aefa1374b1564c6e6bed391d24aaa3947c71c782", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling lazycell v1.2.0
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling openssl v0.10.15
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling indexmap v1.0.2
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling string v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling encoding_rs v0.8.12
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling unicase v2.2.0
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling rand_isaac v0.1.0
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.0
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling smallvec v0.6.6
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.80/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="std"' -C metadata=cf97db2f353d6d48 -C extra-filename=-cf97db2f353d6d48 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=forbid --cfg de_boxed_c_str --cfg de_rc_dst --cfg core_duration --cfg integer128 --cfg range_inclusive --cfg num_nonzero` (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" "cfba64c9de34816d3e207846aefa1374b1564c6e6bed391d24aaa3947c71c782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfba64c9de34816d3e207846aefa1374b1564c6e6bed391d24aaa3947c71c782", kill_on_drop: false }`
[INFO] [stdout] cfba64c9de34816d3e207846aefa1374b1564c6e6bed391d24aaa3947c71c782