[INFO] fetching crate peepmatic 0.66.0...
[INFO] checking peepmatic-0.66.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate peepmatic 0.66.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate peepmatic 0.66.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peepmatic 0.66.0
[INFO] finished tweaking crates.io crate peepmatic 0.66.0
[INFO] tweaked toml for crates.io crate peepmatic 0.66.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--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 z3 v0.6.0
[INFO] [stderr]   Downloaded peepmatic-runtime v0.2.0
[INFO] [stderr]   Downloaded z3-sys v0.6.2
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 832ec65a6cab1b9564eda615d48b6cff9422ea6bbf3c4a4660b502db4c330dd5
[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" "832ec65a6cab1b9564eda615d48b6cff9422ea6bbf3c4a4660b502db4c330dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "832ec65a6cab1b9564eda615d48b6cff9422ea6bbf3c4a4660b502db4c330dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "832ec65a6cab1b9564eda615d48b6cff9422ea6bbf3c4a4660b502db4c330dd5", kill_on_drop: false }`
[INFO] [stdout] 832ec65a6cab1b9564eda615d48b6cff9422ea6bbf3c4a4660b502db4c330dd5
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d27a12b89837b2794986f5e1b4ed1a297e3964c6e7a7b872d398416aa4187e5
[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" "2d27a12b89837b2794986f5e1b4ed1a297e3964c6e7a7b872d398416aa4187e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking leb128 v0.2.4
[INFO] [stderr]     Checking bumpalo v3.4.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking wast v15.0.0
[INFO] [stderr]    Compiling z3-sys v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling peepmatic-macro v0.2.0
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr] error: could not compile `serde_derive`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde_derive /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_derive-1.0.115/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=015427e3c6263ae2 -C extra-filename=-015427e3c6263ae2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-091210945e98acc4.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-a7a073445149a473.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-475052851d86ebd8.rlib --extern proc_macro --cap-lints allow --cap-lints=forbid --cfg underscore_consts` (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" "2d27a12b89837b2794986f5e1b4ed1a297e3964c6e7a7b872d398416aa4187e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d27a12b89837b2794986f5e1b4ed1a297e3964c6e7a7b872d398416aa4187e5", kill_on_drop: false }`
[INFO] [stdout] 2d27a12b89837b2794986f5e1b4ed1a297e3964c6e7a7b872d398416aa4187e5