[INFO] fetching crate codesim 0.1.2...
[INFO] checking codesim-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate codesim 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate codesim 0.1.2
[INFO] finished tweaking crates.io crate codesim 0.1.2
[INFO] tweaked toml for crates.io crate codesim 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate codesim 0.1.2 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 codesim 0.1.2 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c8b87651284c27bec2026e56bcbd0911cf77c6a9f554559e3e5fb65c1480bbf0
[INFO] running `Command { std: "docker" "start" "-a" "c8b87651284c27bec2026e56bcbd0911cf77c6a9f554559e3e5fb65c1480bbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8b87651284c27bec2026e56bcbd0911cf77c6a9f554559e3e5fb65c1480bbf0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8b87651284c27bec2026e56bcbd0911cf77c6a9f554559e3e5fb65c1480bbf0", kill_on_drop: false }`
[INFO] [stdout] c8b87651284c27bec2026e56bcbd0911cf77c6a9f554559e3e5fb65c1480bbf0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 44d8efaed8a32a8727283eec6ddd46836a15053962a6a352b60ab0a7ced31a82
[INFO] running `Command { std: "docker" "start" "-a" "44d8efaed8a32a8727283eec6ddd46836a15053962a6a352b60ab0a7ced31a82", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking codesim v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 | /   #[structopt(long = "--csv", help = "Output CSV")]
[INFO] [stdout] 30 | |   csv: Option<PathBuf>,
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 38 | /   #[structopt(long = "--files", help = "extra files")]
[INFO] [stdout] 39 | |   files: Vec<PathBuf>,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:29:3
[INFO] [stdout]    |
[INFO] [stdout] 29 | /   #[structopt(long = "--csv", help = "Output CSV")]
[INFO] [stdout] 30 | |   csv: Option<PathBuf>,
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:38:3
[INFO] [stdout]    |
[INFO] [stdout] 38 | /   #[structopt(long = "--files", help = "extra files")]
[INFO] [stdout] 39 | |   files: Vec<PathBuf>,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `codesim` (bin "codesim") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `codesim` (bin "codesim" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "44d8efaed8a32a8727283eec6ddd46836a15053962a6a352b60ab0a7ced31a82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d8efaed8a32a8727283eec6ddd46836a15053962a6a352b60ab0a7ced31a82", kill_on_drop: false }`
[INFO] [stdout] 44d8efaed8a32a8727283eec6ddd46836a15053962a6a352b60ab0a7ced31a82