[INFO] cloning repository https://github.com/fallingyang/rust-lab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fallingyang/rust-lab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77f3b153a7b903a373e909ddea79158f8c15d896
[INFO] checking fallingyang/rust-lab against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffallingyang%2Frust-lab" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fallingyang/rust-lab on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fallingyang/rust-lab
[INFO] finished tweaking git repo https://github.com/fallingyang/rust-lab
[INFO] tweaked toml for git repo https://github.com/fallingyang/rust-lab written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/fallingyang/rust-lab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 77691a60256f65cd066d274d6f0b497a2ac0514365319d631dbf007aca3e7881
[INFO] running `Command { std: "docker" "start" "-a" "77691a60256f65cd066d274d6f0b497a2ac0514365319d631dbf007aca3e7881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77691a60256f65cd066d274d6f0b497a2ac0514365319d631dbf007aca3e7881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77691a60256f65cd066d274d6f0b497a2ac0514365319d631dbf007aca3e7881", kill_on_drop: false }`
[INFO] [stdout] 77691a60256f65cd066d274d6f0b497a2ac0514365319d631dbf007aca3e7881
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f23904c8698eab20c644e74d1a304957aa416846f53c0ca2c536849ced5ac4c
[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" "1f23904c8698eab20c644e74d1a304957aa416846f53c0ca2c536849ced5ac4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.67.0
[INFO] [stderr]    Compiling target-lexicon v0.11.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking tower-layer v0.3.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking pollster v0.2.0
[INFO] [stderr]    Compiling wasmtime-cache v0.20.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking sharded-slab v0.1.0
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.8.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking instant v0.1.8
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking mqtt4bytes v0.3.0
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking wast v26.0.1
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking async-channel v1.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.7.14
[INFO] [stderr]     Checking miniz_oxide v0.4.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking atoi v0.3.3
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking region v2.2.0
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]    Compiling prost-build v0.6.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking wat v1.0.27
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]    Compiling zstd-sys v1.4.17+zstd.1.4.5
[INFO] [stderr]    Compiling wasmtime-runtime v0.20.0
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling quiche v0.6.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling tokio-macros v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling prost-derive v0.6.1
[INFO] [stderr]    Compiling scroll_derive v0.10.4
[INFO] [stderr]    Compiling async-trait v0.1.41
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking async-stream v0.2.1
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking scroll v0.10.2
[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-1.0.117/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=094797a652f9c3bf -C extra-filename=-094797a652f9c3bf --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.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-42bf3df2a4136a24.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-ad0db5a136e5d5e0.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" "1f23904c8698eab20c644e74d1a304957aa416846f53c0ca2c536849ced5ac4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f23904c8698eab20c644e74d1a304957aa416846f53c0ca2c536849ced5ac4c", kill_on_drop: false }`
[INFO] [stdout] 1f23904c8698eab20c644e74d1a304957aa416846f53c0ca2c536849ced5ac4c