[INFO] fetching crate peepmatic-souper 0.72.0...
[INFO] checking peepmatic-souper-0.72.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate peepmatic-souper 0.72.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate peepmatic-souper 0.72.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peepmatic-souper 0.72.0
[INFO] finished tweaking crates.io crate peepmatic-souper 0.72.0
[INFO] tweaked toml for crates.io crate peepmatic-souper 0.72.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c587efc4b93872d1e591f1f4138752a9d611326736b1ac0158ec5221a38dc38
[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" "6c587efc4b93872d1e591f1f4138752a9d611326736b1ac0158ec5221a38dc38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c587efc4b93872d1e591f1f4138752a9d611326736b1ac0158ec5221a38dc38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c587efc4b93872d1e591f1f4138752a9d611326736b1ac0158ec5221a38dc38", kill_on_drop: false }`
[INFO] [stdout] 6c587efc4b93872d1e591f1f4138752a9d611326736b1ac0158ec5221a38dc38
[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" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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] ed5327e5e60e9a659c52c01b21e2d2d03031a52568dafd2c43f3fd88b4838e1a
[INFO] running `Command { std: "docker" "start" "-a" "ed5327e5e60e9a659c52c01b21e2d2d03031a52568dafd2c43f3fd88b4838e1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking peepmatic-traits v0.72.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking wast v35.0.2
[INFO] [stderr]     Checking souper-ir v2.1.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking peepmatic-souper v0.72.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling z3-sys v0.6.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling peepmatic-macro v0.72.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr] error: could not compile `serde`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name serde /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.125/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="serde_derive"' --cfg 'feature="std"' -C metadata=b16606503175c51d -C extra-filename=-b16606503175c51d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-254e3db19eb9a319.so --cap-lints allow --cap-lints=forbid --cfg ops_bound --cfg core_reverse --cfg de_boxed_c_str --cfg de_boxed_path --cfg de_rc_dst --cfg core_duration --cfg integer128 --cfg range_inclusive --cfg num_nonzero --cfg serde_derive --cfg core_try_from --cfg num_nonzero_signed --cfg systemtime_checked_add --cfg std_atomic64 --cfg std_atomic` (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" "ed5327e5e60e9a659c52c01b21e2d2d03031a52568dafd2c43f3fd88b4838e1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed5327e5e60e9a659c52c01b21e2d2d03031a52568dafd2c43f3fd88b4838e1a", kill_on_drop: false }`
[INFO] [stdout] ed5327e5e60e9a659c52c01b21e2d2d03031a52568dafd2c43f3fd88b4838e1a