[INFO] fetching crate posterust 0.0.1...
[INFO] checking posterust-0.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate posterust 0.0.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate posterust 0.0.1
[INFO] finished tweaking crates.io crate posterust 0.0.1
[INFO] tweaked toml for crates.io crate posterust 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate posterust 0.0.1 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 posterust 0.0.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] bf30734e034d8f457f883a677ef80344094a2f411e657c9df960532556d55694
[INFO] running `Command { std: "docker" "start" "-a" "bf30734e034d8f457f883a677ef80344094a2f411e657c9df960532556d55694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf30734e034d8f457f883a677ef80344094a2f411e657c9df960532556d55694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf30734e034d8f457f883a677ef80344094a2f411e657c9df960532556d55694", kill_on_drop: false }`
[INFO] [stdout] bf30734e034d8f457f883a677ef80344094a2f411e657c9df960532556d55694
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7a27f7965eeafe81b876198467d7ba894922fd8f2f52b919c29fbc6f42e2b436
[INFO] running `Command { std: "docker" "start" "-a" "7a27f7965eeafe81b876198467d7ba894922fd8f2f52b919c29fbc6f42e2b436", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]     Checking bytemuck v1.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.11
[INFO] [stderr]    Compiling proc-macro-error v0.4.11
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking image v0.23.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]    Compiling structopt-derive v0.4.4
[INFO] [stderr]     Checking structopt v0.3.11
[INFO] [stderr]     Checking posterust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     /// Colors to use in place of greyscale. Maximum of 11 values, must match
[INFO] [stdout] 42 | |     /// with corresponding amount of `values` or `num_steps`.
[INFO] [stdout] 43 | |     #[structopt(
[INFO] [stdout] 44 | |         short,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |     )]
[INFO] [stdout] 51 | |     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] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     /// File extension of output.
[INFO] [stdout] 54 | |     #[structopt(short, long = "ext", default_value = "png", required = false)]
[INFO] [stdout] 55 | |     extension: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `posterust` (lib test) 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<String, Infallible>
[INFO] [stdout]   --> src/lib.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     /// Colors to use in place of greyscale. Maximum of 11 values, must match
[INFO] [stdout] 42 | |     /// with corresponding amount of `values` or `num_steps`.
[INFO] [stdout] 43 | |     #[structopt(
[INFO] [stdout] 44 | |         short,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |     )]
[INFO] [stdout] 51 | |     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] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/lib.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     /// File extension of output.
[INFO] [stdout] 54 | |     #[structopt(short, long = "ext", default_value = "png", required = false)]
[INFO] [stdout] 55 | |     extension: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `posterust` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7a27f7965eeafe81b876198467d7ba894922fd8f2f52b919c29fbc6f42e2b436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a27f7965eeafe81b876198467d7ba894922fd8f2f52b919c29fbc6f42e2b436", kill_on_drop: false }`
[INFO] [stdout] 7a27f7965eeafe81b876198467d7ba894922fd8f2f52b919c29fbc6f42e2b436
