[INFO] fetching crate kmeans_colors 0.7.1...
[INFO] checking kmeans_colors-0.7.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate kmeans_colors 0.7.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate kmeans_colors 0.7.1
[INFO] finished tweaking crates.io crate kmeans_colors 0.7.1
[INFO] tweaked toml for crates.io crate kmeans_colors 0.7.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kmeans_colors 0.7.1 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 kmeans_colors 0.7.1 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] de883e7ac116efcbd97754f403be9229cda1e3c19310618df78be3bdeda30637
[INFO] running `Command { std: "docker" "start" "-a" "de883e7ac116efcbd97754f403be9229cda1e3c19310618df78be3bdeda30637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de883e7ac116efcbd97754f403be9229cda1e3c19310618df78be3bdeda30637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de883e7ac116efcbd97754f403be9229cda1e3c19310618df78be3bdeda30637", kill_on_drop: false }`
[INFO] [stdout] de883e7ac116efcbd97754f403be9229cda1e3c19310618df78be3bdeda30637
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f7b14465ec6c9b8098e2b046f5889e9afbde1af105f763287f3b2a0eae1fd5a6
[INFO] running `Command { std: "docker" "start" "-a" "f7b14465ec6c9b8098e2b046f5889e9afbde1af105f763287f3b2a0eae1fd5a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling palette v0.7.6
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking zune-jpeg v0.4.21
[INFO] [stderr]     Checking foldhash v0.2.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking pxfm v0.1.23
[INFO] [stderr]    Compiling palette_derive v0.7.6
[INFO] [stderr]     Checking hashbrown v0.16.0
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking moxcms v0.7.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking image v0.25.8
[INFO] [stderr]     Checking kmeans_colors v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kmeans_colors/args.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     /// File extension of output.
[INFO] [stdout] 71 | |     #[structopt(short, long = "ext", default_value = "png", required = false)]
[INFO] [stdout] 72 | |     pub extension: String,
[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<String, Infallible>
[INFO] [stdout]    --> src/bin/kmeans_colors/args.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 | /         /// Colors to map the pixels to the nearest value of.
[INFO] [stdout] 163 | |         #[structopt(
[INFO] [stdout] 164 | |             short,
[INFO] [stdout] 165 | |             long,
[INFO] [stdout] ...   |
[INFO] [stdout] 170 | |         )]
[INFO] [stdout] 171 | |         colors: Vec<String>,
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/kmeans_colors/args.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     /// File extension of output.
[INFO] [stdout] 71 | |     #[structopt(short, long = "ext", default_value = "png", required = false)]
[INFO] [stdout] 72 | |     pub extension: String,
[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<String, Infallible>
[INFO] [stdout]    --> src/bin/kmeans_colors/args.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 | /         /// Colors to map the pixels to the nearest value of.
[INFO] [stdout] 163 | |         #[structopt(
[INFO] [stdout] 164 | |             short,
[INFO] [stdout] 165 | |             long,
[INFO] [stdout] ...   |
[INFO] [stdout] 170 | |         )]
[INFO] [stdout] 171 | |         colors: Vec<String>,
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `kmeans_colors` (bin "kmeans_colors" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `kmeans_colors` (bin "kmeans_colors") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f7b14465ec6c9b8098e2b046f5889e9afbde1af105f763287f3b2a0eae1fd5a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7b14465ec6c9b8098e2b046f5889e9afbde1af105f763287f3b2a0eae1fd5a6", kill_on_drop: false }`
[INFO] [stdout] f7b14465ec6c9b8098e2b046f5889e9afbde1af105f763287f3b2a0eae1fd5a6