[INFO] fetching crate jupyter-client 0.1.0...
[INFO] checking jupyter-client-0.1.0 against master#7dc9ff5c629753b6930ecfe9a0446538b8e25fb7 for pr-85387
[INFO] extracting crate jupyter-client 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate jupyter-client 0.1.0 on toolchain 7dc9ff5c629753b6930ecfe9a0446538b8e25fb7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jupyter-client 0.1.0
[INFO] finished tweaking crates.io crate jupyter-client 0.1.0
[INFO] tweaked toml for crates.io crate jupyter-client 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "fetch" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "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] 8a8326b3991aee42877c34c1d47f3cb0af356ccd0d1b29d3cc63bd6b6df2af16
[INFO] running `Command { std: "docker" "start" "-a" "8a8326b3991aee42877c34c1d47f3cb0af356ccd0d1b29d3cc63bd6b6df2af16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a8326b3991aee42877c34c1d47f3cb0af356ccd0d1b29d3cc63bd6b6df2af16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8326b3991aee42877c34c1d47f3cb0af356ccd0d1b29d3cc63bd6b6df2af16", kill_on_drop: false }`
[INFO] [stdout] 8a8326b3991aee42877c34c1d47f3cb0af356ccd0d1b29d3cc63bd6b6df2af16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+7dc9ff5c629753b6930ecfe9a0446538b8e25fb7" "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] 18eb2fe1eeb8b2830fe3bf11710e21b9476da0efe003bd46aa196e1c4d9edbc9
[INFO] running `Command { std: "docker" "start" "-a" "18eb2fe1eeb8b2830fe3bf11710e21b9476da0efe003bd46aa196e1c4d9edbc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling zmq-sys v0.8.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling zmq v0.8.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking jupyter-client v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: missing documentation for macro
[INFO] [stdout]   --> src/test_helpers.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | macro_rules! compare_bytestrings {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(missing_docs)]
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jupyter-client`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "18eb2fe1eeb8b2830fe3bf11710e21b9476da0efe003bd46aa196e1c4d9edbc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18eb2fe1eeb8b2830fe3bf11710e21b9476da0efe003bd46aa196e1c4d9edbc9", kill_on_drop: false }`
[INFO] [stdout] 18eb2fe1eeb8b2830fe3bf11710e21b9476da0efe003bd46aa196e1c4d9edbc9