[INFO] cloning repository https://github.com/timsavage/rusty-maschine-mikro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/timsavage/rusty-maschine-mikro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimsavage%2Frusty-maschine-mikro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimsavage%2Frusty-maschine-mikro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f7ad26729092b7a10f1c71709b747ab88c42d7ff
[INFO] checking timsavage/rusty-maschine-mikro against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftimsavage%2Frusty-maschine-mikro" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/timsavage/rusty-maschine-mikro
[INFO] finished tweaking git repo https://github.com/timsavage/rusty-maschine-mikro
[INFO] tweaked toml for git repo https://github.com/timsavage/rusty-maschine-mikro written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/timsavage/rusty-maschine-mikro 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 git repo https://github.com/timsavage/rusty-maschine-mikro 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 2244bcae321a262633b9b10e28abb94a837249dd3bef6b24b44d757d2c86e0bd
[INFO] running `Command { std: "docker" "start" "-a" "2244bcae321a262633b9b10e28abb94a837249dd3bef6b24b44d757d2c86e0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2244bcae321a262633b9b10e28abb94a837249dd3bef6b24b44d757d2c86e0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2244bcae321a262633b9b10e28abb94a837249dd3bef6b24b44d757d2c86e0bd", kill_on_drop: false }`
[INFO] [stdout] 2244bcae321a262633b9b10e28abb94a837249dd3bef6b24b44d757d2c86e0bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4a364ac6fd9f30d1014b1e5458a06c7bdef885318bb3adcdfda8db1f71ba7e6d
[INFO] running `Command { std: "docker" "start" "-a" "4a364ac6fd9f30d1014b1e5458a06c7bdef885318bb3adcdfda8db1f71ba7e6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling hidapi v1.2.5
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]     Checking mm-tools v0.1.0 (/opt/rustwide/workdir/tools)
[INFO] [stdout] warning: field `file_size` is never read
[INFO] [stdout]   --> tools/src/bitmap.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct FileHeader {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] 60 |     file_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> tools/src/bitmap.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct DIBHeader {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 78 |     version: BitmapVersion,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     planes: u16,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 82 |     bits_per_pixel: u16,
[INFO] [stdout] 83 |     compression: CompressionMethod,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 84 |     data_size: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 85 |     x_ppm: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 86 |     y_ppm: u32,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 87 |     colour_count: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 88 |     important_colour_count: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DIBHeader` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_header` is never read
[INFO] [stdout]    --> tools/src/bitmap.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub struct Bitmap {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 125 |     file_header: FileHeader,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> tools/src/font-gen.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     file_path: 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 `mm-tools` (bin "font-gen") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4a364ac6fd9f30d1014b1e5458a06c7bdef885318bb3adcdfda8db1f71ba7e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a364ac6fd9f30d1014b1e5458a06c7bdef885318bb3adcdfda8db1f71ba7e6d", kill_on_drop: false }`
[INFO] [stdout] 4a364ac6fd9f30d1014b1e5458a06c7bdef885318bb3adcdfda8db1f71ba7e6d