[INFO] fetching crate discodo 0.1.1...
[INFO] testing discodo-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate discodo 0.1.1 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate discodo 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate discodo 0.1.1
[INFO] finished tweaking crates.io crate discodo 0.1.1
[INFO] tweaked toml for crates.io crate discodo 0.1.1 written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-tungstenite v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b2be96efdbf01855ce250f06f062be2de4d5fdedc1bf3cac4ff4062687d6d936
[INFO] running `Command { std: "docker" "start" "-a" "b2be96efdbf01855ce250f06f062be2de4d5fdedc1bf3cac4ff4062687d6d936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2be96efdbf01855ce250f06f062be2de4d5fdedc1bf3cac4ff4062687d6d936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2be96efdbf01855ce250f06f062be2de4d5fdedc1bf3cac4ff4062687d6d936", kill_on_drop: false }`
[INFO] [stdout] b2be96efdbf01855ce250f06f062be2de4d5fdedc1bf3cac4ff4062687d6d936
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e26dba739e56ca69ec380436b00f11f9f6e7789e65b5d7689b629637fab374eb
[INFO] running `Command { std: "docker" "start" "-a" "e26dba739e56ca69ec380436b00f11f9f6e7789e65b5d7689b629637fab374eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling futures-sink v0.3.17
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling slab v0.4.4
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling cpufeatures v0.2.1
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling httpdate v1.0.1
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling base64 v0.12.3
[INFO] [stderr]    Compiling serenity v0.10.9
[INFO] [stderr]    Compiling ipnet v2.3.1
[INFO] [stderr]    Compiling uwl v0.6.0
[INFO] [stderr]    Compiling typemap_rev v0.1.5
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling tracing-core v0.1.19
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling command_attr v0.3.7
[INFO] [stderr] error: could not compile `command_attr`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name command_attr --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/command_attr-0.3.7/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 -C metadata=01b3526d08a7a232 -C extra-filename=-01b3526d08a7a232 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-699bbece778063bb.rlib --extern quote=/opt/rustwide/target/debug/deps/libquote-0758f46bd75f90b0.rlib --extern syn=/opt/rustwide/target/debug/deps/libsyn-72b173be29a0a4b9.rlib --extern proc_macro --cap-lints allow --cap-lints=warn` (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" "e26dba739e56ca69ec380436b00f11f9f6e7789e65b5d7689b629637fab374eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e26dba739e56ca69ec380436b00f11f9f6e7789e65b5d7689b629637fab374eb", kill_on_drop: false }`
[INFO] [stdout] e26dba739e56ca69ec380436b00f11f9f6e7789e65b5d7689b629637fab374eb