[INFO] fetching crate trunk 0.7.4...
[INFO] testing trunk-0.7.4 against 1.49.0 for beta-1.50-1
[INFO] extracting crate trunk 0.7.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate trunk 0.7.4 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trunk 0.7.4
[INFO] finished tweaking crates.io crate trunk 0.7.4
[INFO] tweaked toml for crates.io crate trunk 0.7.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate trunk 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe65fcfd45c8764ee0fb2ed14d84ade9d4c850d2f257604d6d3412d6792ba011
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fe65fcfd45c8764ee0fb2ed14d84ade9d4c850d2f257604d6d3412d6792ba011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe65fcfd45c8764ee0fb2ed14d84ade9d4c850d2f257604d6d3412d6792ba011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe65fcfd45c8764ee0fb2ed14d84ade9d4c850d2f257604d6d3412d6792ba011", kill_on_drop: false }`
[INFO] [stdout] fe65fcfd45c8764ee0fb2ed14d84ade9d4c850d2f257604d6d3412d6792ba011
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64a59b92d0704b3461db4e1d8292b8ef34a6b575095e1f2ed11d8854bf98a88e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "64a59b92d0704b3461db4e1d8292b8ef34a6b575095e1f2ed11d8854bf98a88e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.46
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling futures-core v0.3.6
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling futures-io v0.3.6
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling futures-sink v0.3.6
[INFO] [stderr]    Compiling data-encoding v2.3.0
[INFO] [stderr]    Compiling http-types v2.6.0
[INFO] [stderr]    Compiling infer v0.2.3
[INFO] [stderr]    Compiling curl v0.4.34
[INFO] [stderr]    Compiling isahc v0.9.10
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling vec-arena v0.5.2
[INFO] [stderr]    Compiling route-recognizer v0.2.0
[INFO] [stderr]    Compiling number_prefix v0.3.0
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling seahash v4.0.1
[INFO] [stderr]    Compiling dunce v1.0.1
[INFO] [stderr]    Compiling standback v0.2.11
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]    Compiling cookie v0.14.2
[INFO] [stderr]    Compiling blake3 v0.3.7
[INFO] [stderr]    Compiling openssl-sys v0.9.58
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.38+curl-7.73.0
[INFO] [stderr]    Compiling dtoa-short v0.3.2
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling futures-channel v0.3.6
[INFO] [stderr]    Compiling futures-task v0.3.6
[INFO] [stderr]    Compiling async-channel v1.5.1
[INFO] [stderr]    Compiling nb-connect v1.0.2
[INFO] [stderr]    Compiling socket2 v0.3.15
[INFO] [stderr]    Compiling net2 v0.2.35
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling terminal_size v0.1.13
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling signal-hook-registry v1.2.1
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling polling v1.1.0
[INFO] [stderr]    Compiling polling v0.1.9
[INFO] [stderr]    Compiling futures-lite v1.11.2
[INFO] [stderr]    Compiling sass-sys v0.4.21
[INFO] [stderr]    Compiling crypto-mac v0.8.0
[INFO] [stderr]    Compiling block-cipher v0.7.1
[INFO] [stderr]    Compiling universal-hash v0.4.0
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling mio v0.6.22
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling hmac v0.8.1
[INFO] [stderr]    Compiling byte-pool v0.2.2
[INFO] [stderr]    Compiling aes-soft v0.4.0
[INFO] [stderr]    Compiling polyval v0.4.1
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling hkdf v0.9.0
[INFO] [stderr]    Compiling ghash v0.3.0
[INFO] [stderr]    Compiling aes v0.4.0
[INFO] [stderr]    Compiling aes-gcm v0.6.0
[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-0.6.20/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=3fbc282b3ad46b5c -C extra-filename=-3fbc282b3ad46b5c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --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" "64a59b92d0704b3461db4e1d8292b8ef34a6b575095e1f2ed11d8854bf98a88e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64a59b92d0704b3461db4e1d8292b8ef34a6b575095e1f2ed11d8854bf98a88e", kill_on_drop: false }`
[INFO] [stdout] 64a59b92d0704b3461db4e1d8292b8ef34a6b575095e1f2ed11d8854bf98a88e