[INFO] fetching crate mdbook-plantuml 0.6.0-beta...
[INFO] checking mdbook-plantuml-0.6.0-beta against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate mdbook-plantuml 0.6.0-beta into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate mdbook-plantuml 0.6.0-beta on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-plantuml 0.6.0-beta
[INFO] finished tweaking crates.io crate mdbook-plantuml 0.6.0-beta
[INFO] tweaked toml for crates.io crate mdbook-plantuml 0.6.0-beta written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate mdbook-plantuml 0.6.0-beta already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml v0.5.1
[INFO] [stderr]   Downloaded string_cache_codegen v0.4.2
[INFO] [stderr]   Downloaded maplit v1.0.1
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[INFO] [stderr]   Downloaded notify v4.0.12
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.17
[INFO] [stderr]   Downloaded toml-query v0.9.0
[INFO] [stderr]   Downloaded simulacrum_user v0.1.0
[INFO] [stderr]   Downloaded simulacrum v0.3.1
[INFO] [stderr]   Downloaded pest v2.1.1
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[INFO] [stderr]   Downloaded getopts v0.2.19
[INFO] [stderr]   Downloaded backtrace-sys v0.1.29
[INFO] [stderr]   Downloaded simulacrum_macros v0.3.1
[INFO] [stderr]   Downloaded ctor v0.1.9
[INFO] [stderr]   Downloaded handlebox v0.3.0
[INFO] [stderr]   Downloaded simulacrum_mock v0.1.0
[INFO] [stderr]   Downloaded backtrace v0.3.32
[INFO] [stderr]   Downloaded digest v0.8.0
[INFO] [stderr]   Downloaded open v1.2.2
[INFO] [stderr]   Downloaded pest_generator v2.1.0
[INFO] [stderr]   Downloaded ucd-trie v0.1.1
[INFO] [stderr]   Downloaded debugit v0.1.2
[INFO] [stderr]   Downloaded simulacrum_shared v0.1.0
[INFO] [stderr]   Downloaded safemem v0.3.0
[INFO] [stderr]   Downloaded string_cache v0.7.3
[INFO] [stderr]   Downloaded serde_yaml v0.8.9
[INFO] [stderr]   Downloaded elasticlunr-rs v2.3.5
[INFO] [stderr]   Downloaded deflate v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86569ea8812680ffb8c3f88497378833ef0775ae18b29fe97c2607faeb37bce9
[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" "86569ea8812680ffb8c3f88497378833ef0775ae18b29fe97c2607faeb37bce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86569ea8812680ffb8c3f88497378833ef0775ae18b29fe97c2607faeb37bce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86569ea8812680ffb8c3f88497378833ef0775ae18b29fe97c2607faeb37bce9", kill_on_drop: false }`
[INFO] [stdout] 86569ea8812680ffb8c3f88497378833ef0775ae18b29fe97c2607faeb37bce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] 2c227fa3b61e006aee7420b6e69ab4ca22a1a576279d09c2a2c13a28c206d91a
[INFO] running `Command { std: "docker" "start" "-a" "2c227fa3b61e006aee7420b6e69ab4ca22a1a576279d09c2a2c13a28c206d91a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]    Compiling pest_derive v2.1.0
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[INFO] [stderr]     Checking mio-extras v2.0.5
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[INFO] [stderr]     Checking handlebars v2.0.2
[INFO] [stderr]     Checking elasticlunr-rs v2.3.5
[INFO] [stderr]     Checking log4rs v0.9.0
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[INFO] [stderr]     Checking iron v0.6.0
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[INFO] [stderr]    Compiling markup5ever v0.9.0
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[INFO] [stderr]     Checking ammonia v3.0.0
[INFO] [stderr]     Checking mdbook v0.3.5
[INFO] [stderr]     Checking mdbook-plantuml v0.6.0-beta (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/markdown_plantuml_pipeline.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             (c == b'`' || c == b'~')
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/markdown_plantuml_pipeline.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |             (c == b'`' || c == b'~')
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 40s
[INFO] running `Command { std: "docker" "inspect" "2c227fa3b61e006aee7420b6e69ab4ca22a1a576279d09c2a2c13a28c206d91a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c227fa3b61e006aee7420b6e69ab4ca22a1a576279d09c2a2c13a28c206d91a", kill_on_drop: false }`
[INFO] [stdout] 2c227fa3b61e006aee7420b6e69ab4ca22a1a576279d09c2a2c13a28c206d91a