[INFO] fetching crate peepmatic 0.75.0...
[INFO] testing peepmatic-0.75.0 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate peepmatic 0.75.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate peepmatic 0.75.0 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peepmatic 0.75.0
[INFO] finished tweaking crates.io crate peepmatic 0.75.0
[INFO] tweaked toml for crates.io crate peepmatic 0.75.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", 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] c1ed27ba257b7dcbff1dcc8ee6c71e583d52479eefa9339da7dd93eebeb25559
[INFO] running `Command { std: "docker" "start" "-a" "c1ed27ba257b7dcbff1dcc8ee6c71e583d52479eefa9339da7dd93eebeb25559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1ed27ba257b7dcbff1dcc8ee6c71e583d52479eefa9339da7dd93eebeb25559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1ed27ba257b7dcbff1dcc8ee6c71e583d52479eefa9339da7dd93eebeb25559", kill_on_drop: false }`
[INFO] [stdout] c1ed27ba257b7dcbff1dcc8ee6c71e583d52479eefa9339da7dd93eebeb25559
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--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] 8dd7a07bcba9055a937c3cecaaa7b440171edf5a153d916d1c45b91aa8ceae22
[INFO] running `Command { std: "docker" "start" "-a" "8dd7a07bcba9055a937c3cecaaa7b440171edf5a153d916d1c45b91aa8ceae22", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling leb128 v0.2.4
[INFO] [stderr]    Compiling peepmatic-traits v0.75.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling wast v35.0.2
[INFO] [stderr]    Compiling z3-sys v0.6.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling peepmatic-macro v0.75.0
[INFO] [stderr]    Compiling thiserror v1.0.26
[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-1.0.127/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' -C metadata=7f40767cbd9ffba8 -C extra-filename=-7f40767cbd9ffba8 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b7a34e7f5505bb8f.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-5da676fa6cee0d41.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-9238af406a5441bb.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" "8dd7a07bcba9055a937c3cecaaa7b440171edf5a153d916d1c45b91aa8ceae22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dd7a07bcba9055a937c3cecaaa7b440171edf5a153d916d1c45b91aa8ceae22", kill_on_drop: false }`
[INFO] [stdout] 8dd7a07bcba9055a937c3cecaaa7b440171edf5a153d916d1c45b91aa8ceae22