[INFO] cloning repository https://github.com/MaulingMonkey/cargo-html
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MaulingMonkey/cargo-html" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaulingMonkey%2Fcargo-html", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaulingMonkey%2Fcargo-html'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0107753a4f79a9f05bb21c6045e67603328f6de1
[INFO] checking MaulingMonkey/cargo-html against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMaulingMonkey%2Fcargo-html" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MaulingMonkey/cargo-html on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/MaulingMonkey/cargo-html
[INFO] finished tweaking git repo https://github.com/MaulingMonkey/cargo-html
[INFO] tweaked toml for git repo https://github.com/MaulingMonkey/cargo-html written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/MaulingMonkey/cargo-html already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binaryen v0.12.0
[INFO] [stderr]   Downloaded tar v0.4.32
[INFO] [stderr]   Downloaded curl v0.4.25
[INFO] [stderr]   Downloaded is_executable v0.1.2
[INFO] [stderr]   Downloaded binary-install v0.0.2
[INFO] [stderr]   Downloaded alphanumeric-sort v1.4.0
[INFO] [stderr]   Downloaded curl-sys v0.4.40+curl-7.75.0
[INFO] [stderr]   Downloaded mmrbi v0.0.17
[INFO] [stderr]   Downloaded binaryen-sys v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8b505324e98deb670b06a002fdfb59d115ee538e752372e2517f5ec5315c257
[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" "e8b505324e98deb670b06a002fdfb59d115ee538e752372e2517f5ec5315c257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8b505324e98deb670b06a002fdfb59d115ee538e752372e2517f5ec5315c257", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8b505324e98deb670b06a002fdfb59d115ee538e752372e2517f5ec5315c257", kill_on_drop: false }`
[INFO] [stdout] e8b505324e98deb670b06a002fdfb59d115ee538e752372e2517f5ec5315c257
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 449e884936f8e6d86df84a3c3ae06ee52d51f94fd1786f697e82337c04fb574e
[INFO] running `Command { std: "docker" "start" "-a" "449e884936f8e6d86df84a3c3ae06ee52d51f94fd1786f697e82337c04fb574e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling serde_json v1.0.62
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking alphanumeric-sort v1.4.0
[INFO] [stderr]     Checking is_executable v0.1.2
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking semver-parser v0.10.2
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking tar v0.4.32
[INFO] [stderr]    Compiling binaryen-sys v0.12.0
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling curl-sys v0.4.40+curl-7.75.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.60/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="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=d7c8ccc3803b65b7 -C extra-filename=-d7c8ccc3803b65b7 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-ba80430fb18d8252.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-fae22c8d974295d1.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4182131ee577b5da.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" "449e884936f8e6d86df84a3c3ae06ee52d51f94fd1786f697e82337c04fb574e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "449e884936f8e6d86df84a3c3ae06ee52d51f94fd1786f697e82337c04fb574e", kill_on_drop: false }`
[INFO] [stdout] 449e884936f8e6d86df84a3c3ae06ee52d51f94fd1786f697e82337c04fb574e