[INFO] fetching crate mdbook-autosummary 0.1.9...
[INFO] checking mdbook-autosummary-0.1.9 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mdbook-autosummary 0.1.9 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate mdbook-autosummary 0.1.9
[INFO] finished tweaking crates.io crate mdbook-autosummary 0.1.9
[INFO] tweaked toml for crates.io crate mdbook-autosummary 0.1.9 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-autosummary 0.1.9 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-autosummary 0.1.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f2cf4f01fe75ddf9be673c0beecc801d10f2508b88e707c8efbe33674cbd995
[INFO] running `Command { std: "docker" "start" "-a" "1f2cf4f01fe75ddf9be673c0beecc801d10f2508b88e707c8efbe33674cbd995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f2cf4f01fe75ddf9be673c0beecc801d10f2508b88e707c8efbe33674cbd995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f2cf4f01fe75ddf9be673c0beecc801d10f2508b88e707c8efbe33674cbd995", kill_on_drop: false }`
[INFO] [stdout] 1f2cf4f01fe75ddf9be673c0beecc801d10f2508b88e707c8efbe33674cbd995
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 253c8051e6ab7d2382dcc8091888a411089baa4d94751a6872d46a0165c110a8
[INFO] running `Command { std: "docker" "start" "-a" "253c8051e6ab7d2382dcc8091888a411089baa4d94751a6872d46a0165c110a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
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[INFO] [stderr]    Compiling pest_generator v2.7.15
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[INFO] [stderr]     Checking tokio-util v0.7.13
[INFO] [stderr]    Compiling pest_derive v2.7.15
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[INFO] [stderr]     Checking mdbook v0.4.45
[INFO] [stderr]     Checking mdbook-autosummary v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<config::Config, Infallible>
[INFO] [stdout]   --> src/config.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |               Some(raw) => raw
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 24 | |                 .clone()
[INFO] [stdout] 25 | |                 .try_into()
[INFO] [stdout] 26 | |                 .or_else(|_| Ok::<Self, Infallible>(Config::default()))
[INFO] [stdout]    | |_______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<config::Config, Infallible>
[INFO] [stdout]   --> src/config.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 .or_else(|_| Ok::<Self, Infallible>(Config::default()))
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdbook-autosummary` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<config::Config, Infallible>
[INFO] [stdout]   --> src/config.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |               Some(raw) => raw
[INFO] [stdout]    |  __________________________^
[INFO] [stdout] 24 | |                 .clone()
[INFO] [stdout] 25 | |                 .try_into()
[INFO] [stdout] 26 | |                 .or_else(|_| Ok::<Self, Infallible>(Config::default()))
[INFO] [stdout]    | |_______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<config::Config, Infallible>
[INFO] [stdout]   --> src/config.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 .or_else(|_| Ok::<Self, Infallible>(Config::default()))
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdbook-autosummary` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "253c8051e6ab7d2382dcc8091888a411089baa4d94751a6872d46a0165c110a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "253c8051e6ab7d2382dcc8091888a411089baa4d94751a6872d46a0165c110a8", kill_on_drop: false }`
[INFO] [stdout] 253c8051e6ab7d2382dcc8091888a411089baa4d94751a6872d46a0165c110a8
