[INFO] fetching crate salmon 0.5.0...
[INFO] checking salmon-0.5.0 against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] extracting crate salmon 0.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate salmon 0.5.0 on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate salmon 0.5.0
[INFO] finished tweaking crates.io crate salmon 0.5.0
[INFO] tweaked toml for crates.io crate salmon 0.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sass-rs v0.2.2
[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" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a458944e7bc17f02406e036867873aee9243f09b40ddf82927c2cdac04ed02d3
[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" "a458944e7bc17f02406e036867873aee9243f09b40ddf82927c2cdac04ed02d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a458944e7bc17f02406e036867873aee9243f09b40ddf82927c2cdac04ed02d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a458944e7bc17f02406e036867873aee9243f09b40ddf82927c2cdac04ed02d3", kill_on_drop: false }`
[INFO] [stdout] a458944e7bc17f02406e036867873aee9243f09b40ddf82927c2cdac04ed02d3
[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" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b527c7ca8f93b4e2d030f65b6e1cff0f9c274707fe376dc5dcf0006fc2d63e9
[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" "9b527c7ca8f93b4e2d030f65b6e1cff0f9c274707fe376dc5dcf0006fc2d63e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bindgen v0.56.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling procedural-masquerade v0.1.7
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking line-wrap v0.1.1
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.25.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]    Compiling sass-sys v0.4.22
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling phf_generator v0.7.24
[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-1.0.73/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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' -C metadata=845444ac34722555 -C extra-filename=-845444ac34722555 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-223cc1bf4c7d615f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-9c9c6fb7ecc8d1ce.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-44670c754cca1080.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" "9b527c7ca8f93b4e2d030f65b6e1cff0f9c274707fe376dc5dcf0006fc2d63e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b527c7ca8f93b4e2d030f65b6e1cff0f9c274707fe376dc5dcf0006fc2d63e9", kill_on_drop: false }`
[INFO] [stdout] 9b527c7ca8f93b4e2d030f65b6e1cff0f9c274707fe376dc5dcf0006fc2d63e9