[INFO] fetching crate mdlc 0.8.1...
[INFO] checking mdlc-0.8.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mdlc 0.8.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mdlc 0.8.1
[INFO] finished tweaking crates.io crate mdlc 0.8.1
[INFO] tweaked toml for crates.io crate mdlc 0.8.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdlc 0.8.1 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 mdlc 0.8.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8be31eb840babd3ece4a4a71dbca16a8fb9851b012171d704d5cd0d063b06b7c
[INFO] running `Command { std: "docker" "start" "-a" "8be31eb840babd3ece4a4a71dbca16a8fb9851b012171d704d5cd0d063b06b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8be31eb840babd3ece4a4a71dbca16a8fb9851b012171d704d5cd0d063b06b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8be31eb840babd3ece4a4a71dbca16a8fb9851b012171d704d5cd0d063b06b7c", kill_on_drop: false }`
[INFO] [stdout] 8be31eb840babd3ece4a4a71dbca16a8fb9851b012171d704d5cd0d063b06b7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 663c319a9c414afc06fff71b573481058029c516537fbe98b6be2909028898a5
[INFO] running `Command { std: "docker" "start" "-a" "663c319a9c414afc06fff71b573481058029c516537fbe98b6be2909028898a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling rustls v0.21.10
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking hashbrown v0.14.3
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking tower-service v0.3.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling serde_json v1.0.111
[INFO] [stderr]     Checking unicode-bidi v0.3.14
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking ipnet v2.9.0
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking webpki-roots v0.25.3
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]    Compiling ring v0.17.7
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking h2 v0.3.23
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking hyper-rustls v0.24.2
[INFO] [stderr]     Checking reqwest v0.11.23
[INFO] [stderr]     Checking mdlc v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> bin/main.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     /// Files to check (defaults to **/*.md)
[INFO] [stdout] 10 | |     files: Vec<String>,
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mdlc` (bin "mdlc" test) due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> bin/main.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | /     /// Files to check (defaults to **/*.md)
[INFO] [stdout] 10 | |     files: Vec<String>,
[INFO] [stdout]    | |______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mdlc` (bin "mdlc") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "663c319a9c414afc06fff71b573481058029c516537fbe98b6be2909028898a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663c319a9c414afc06fff71b573481058029c516537fbe98b6be2909028898a5", kill_on_drop: false }`
[INFO] [stdout] 663c319a9c414afc06fff71b573481058029c516537fbe98b6be2909028898a5
