[INFO] fetching crate rscolorq 0.2.0...
[INFO] checking rscolorq-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rscolorq 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate rscolorq 0.2.0
[INFO] finished tweaking crates.io crate rscolorq 0.2.0
[INFO] tweaked toml for crates.io crate rscolorq 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rscolorq 0.2.0 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 rscolorq 0.2.0 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] a144f587697612a1c5893841305d1dd10604b2af6b3bed7c69f39332edbbd17e
[INFO] running `Command { std: "docker" "start" "-a" "a144f587697612a1c5893841305d1dd10604b2af6b3bed7c69f39332edbbd17e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a144f587697612a1c5893841305d1dd10604b2af6b3bed7c69f39332edbbd17e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a144f587697612a1c5893841305d1dd10604b2af6b3bed7c69f39332edbbd17e", kill_on_drop: false }`
[INFO] [stdout] a144f587697612a1c5893841305d1dd10604b2af6b3bed7c69f39332edbbd17e
[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] 93584d90c10f6d60aeab06e62ab6483c0fcae2ec69af08b932a0127b48117586
[INFO] running `Command { std: "docker" "start" "-a" "93584d90c10f6d60aeab06e62ab6483c0fcae2ec69af08b932a0127b48117586", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking rand_pcg v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking rscolorq v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/rscolorq/args.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     /// Dither the image with supplied colors.
[INFO] [stdout] 32 | |     #[structopt(
[INFO] [stdout] 33 | |         short,
[INFO] [stdout] 34 | |         long,
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |     )]
[INFO] [stdout] 40 | |     pub colors: 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 `rscolorq` (bin "rscolorq" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/rscolorq/args.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     /// Dither the image with supplied colors.
[INFO] [stdout] 32 | |     #[structopt(
[INFO] [stdout] 33 | |         short,
[INFO] [stdout] 34 | |         long,
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |     )]
[INFO] [stdout] 40 | |     pub colors: 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 `rscolorq` (bin "rscolorq") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "93584d90c10f6d60aeab06e62ab6483c0fcae2ec69af08b932a0127b48117586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93584d90c10f6d60aeab06e62ab6483c0fcae2ec69af08b932a0127b48117586", kill_on_drop: false }`
[INFO] [stdout] 93584d90c10f6d60aeab06e62ab6483c0fcae2ec69af08b932a0127b48117586