[INFO] fetching crate stew 0.2.0...
[INFO] documenting stew-0.2.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate stew 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate stew 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stew 0.2.0
[INFO] finished tweaking crates.io crate stew 0.2.0
[INFO] tweaked toml for crates.io crate stew 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68a74d31417ad36660733159b2ca2fd14c90bab10ca11d7fe5db595ad5378d79
[INFO] running `Command { std: "docker" "start" "-a" "68a74d31417ad36660733159b2ca2fd14c90bab10ca11d7fe5db595ad5378d79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68a74d31417ad36660733159b2ca2fd14c90bab10ca11d7fe5db595ad5378d79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68a74d31417ad36660733159b2ca2fd14c90bab10ca11d7fe5db595ad5378d79", kill_on_drop: false }`
[INFO] [stdout] 68a74d31417ad36660733159b2ca2fd14c90bab10ca11d7fe5db595ad5378d79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 736e5dad2447f59bdfb43c5984b6f698093b5b20d74ee9dbd8a054529aae4e13
[INFO] running `Command { std: "docker" "start" "-a" "736e5dad2447f59bdfb43c5984b6f698093b5b20d74ee9dbd8a054529aae4e13", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking image v0.21.3
[INFO] [stderr]     Checking stew v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting stew v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/processor/image_operations.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         if let Some(op) = &self.operation {
[INFO] [stdout]    |                           --------------- immutable borrow occurs here
[INFO] [stdout] 27 |             self.apply_operations(&[op.clone()])
[INFO] [stdout]    |             ^^^^                    -- immutable borrow later used here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/bin/huerotate.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     ;
[INFO] [stdout]    |     ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `stew`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name stew_lib src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-27b981c6a08ef0ee.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-01af48c578314a61.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-3ebcbf941690d959.rmeta --cap-lints=warn --crate-version 0.2.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "736e5dad2447f59bdfb43c5984b6f698093b5b20d74ee9dbd8a054529aae4e13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "736e5dad2447f59bdfb43c5984b6f698093b5b20d74ee9dbd8a054529aae4e13", kill_on_drop: false }`
[INFO] [stdout] 736e5dad2447f59bdfb43c5984b6f698093b5b20d74ee9dbd8a054529aae4e13
