[INFO] cloning repository https://github.com/yangcancai/captcha
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yangcancai/captcha" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangcancai%2Fcaptcha", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangcancai%2Fcaptcha'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1f40212941bdaaea1da7c03cc53db833f6683292
[INFO] checking yangcancai/captcha against master#f82664191d0e8764b7435b9d72eb0e366b8b1464 for pr-83354
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyangcancai%2Fcaptcha" "/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/yangcancai/captcha on toolchain f82664191d0e8764b7435b9d72eb0e366b8b1464
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yangcancai/captcha
[INFO] finished tweaking git repo https://github.com/yangcancai/captcha
[INFO] tweaked toml for git repo https://github.com/yangcancai/captcha written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/yangcancai/captcha already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4080a87bbf5e67a2819a0da26bf2378d260f2fb940687cd70de3092ab756035
[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" "e4080a87bbf5e67a2819a0da26bf2378d260f2fb940687cd70de3092ab756035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4080a87bbf5e67a2819a0da26bf2378d260f2fb940687cd70de3092ab756035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4080a87bbf5e67a2819a0da26bf2378d260f2fb940687cd70de3092ab756035", kill_on_drop: false }`
[INFO] [stdout] e4080a87bbf5e67a2819a0da26bf2378d260f2fb940687cd70de3092ab756035
[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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f82664191d0e8764b7435b9d72eb0e366b8b1464" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aeb4484728cfd6d9b7620a416fc2735070d65499ff94f2f37cda0930f396765c
[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" "aeb4484728cfd6d9b7620a416fc2735070d65499ff94f2f37cda0930f396765c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking futures-sink v0.3.13
[INFO] [stderr]    Compiling httparse v1.3.5
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]    Compiling futures-core v0.3.13
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling ref-cast v1.0.6
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling futures-task v0.3.13
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling inlinable_string v0.1.14
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling state v0.4.2 (https://github.com/SergioBenitez/state.git?rev=7576652#7576652a)
[INFO] [stderr]     Checking unchecked-index v0.2.2
[INFO] [stderr]    Compiling async-trait v0.1.48
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling random-trait v0.1.1
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking state v0.4.2 (https://github.com/SergioBenitez/state.git?rev=0a7457d2#0a7457d2)
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling standback v0.2.15
[INFO] [stderr]    Compiling tokio v1.3.0
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.9.1
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling time v0.2.25
[INFO] [stderr]    Compiling uncased v0.9.5
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling cookie v0.15.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling atomic v0.5.0
[INFO] [stderr]    Compiling figment v0.10.3
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling rocket v0.5.0-dev (https://github.com/SergioBenitez/Rocket.git?branch=master#70b42e6f)
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]    Compiling http v0.2.3
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking twoway v0.2.1
[INFO] [stderr]     Checking stable-pattern v0.1.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling pin-project-internal v1.0.5
[INFO] [stderr]    Compiling ref-cast-impl v1.0.6
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking mio v0.7.9
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling devise_core v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=3ebe83#3ebe8382)
[INFO] [stderr]    Compiling pear_codegen v0.2.2
[INFO] [stderr]     Checking random-fast-rng v0.1.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking http-body v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking rand v0.8.3
[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-1.0.124/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=ca0836fd4c0867c1 -C extra-filename=-ca0836fd4c0867c1 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-68d422dfc8864dc7.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-cfc781dd86a6c62d.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-c5a23fda996b26c8.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" "aeb4484728cfd6d9b7620a416fc2735070d65499ff94f2f37cda0930f396765c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeb4484728cfd6d9b7620a416fc2735070d65499ff94f2f37cda0930f396765c", kill_on_drop: false }`
[INFO] [stdout] aeb4484728cfd6d9b7620a416fc2735070d65499ff94f2f37cda0930f396765c