[INFO] cloning repository https://github.com/debasish-raychawdhuri/calendar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/debasish-raychawdhuri/calendar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fcalendar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fcalendar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 293d6b806e60e251bc3092973c94cb45f290e1c8
[INFO] checking debasish-raychawdhuri/calendar 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%2Fdebasish-raychawdhuri%2Fcalendar" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/debasish-raychawdhuri/calendar
[INFO] finished tweaking git repo https://github.com/debasish-raychawdhuri/calendar
[INFO] tweaked toml for git repo https://github.com/debasish-raychawdhuri/calendar written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/debasish-raychawdhuri/calendar 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/debasish-raychawdhuri/calendar 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3683d08924e93a409079900f18934545dc556e4114fdad4da8e704143ce5adea
[INFO] running `Command { std: "docker" "start" "-a" "3683d08924e93a409079900f18934545dc556e4114fdad4da8e704143ce5adea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3683d08924e93a409079900f18934545dc556e4114fdad4da8e704143ce5adea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3683d08924e93a409079900f18934545dc556e4114fdad4da8e704143ce5adea", kill_on_drop: false }`
[INFO] [stdout] 3683d08924e93a409079900f18934545dc556e4114fdad4da8e704143ce5adea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 634f5ecc423f62c2865d9319189e5d234ab683962d7ab2d3a79164c3d4291372
[INFO] running `Command { std: "docker" "start" "-a" "634f5ecc423f62c2865d9319189e5d234ab683962d7ab2d3a79164c3d4291372", kill_on_drop: false }`
[INFO] [stderr]     Checking colored v3.0.0
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking clap_builder v4.5.32
[INFO] [stderr]     Checking chrono v0.4.40
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]     Checking clap v4.5.32
[INFO] [stderr]     Checking calendar v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `DayOfWeek` is never used
[INFO] [stdout]   --> src/calendar.rs:13:10
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub enum DayOfWeek {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_day_number` is never used
[INFO] [stdout]   --> src/calendar.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl DayOfWeek {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn from_day_number(day: u32) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_day_of_week` is never used
[INFO] [stdout]    --> src/calendar.rs:125:12
[INFO] [stdout]     |
[INFO] [stdout]  61 | impl Calendar {
[INFO] [stdout]     | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 125 |     pub fn get_day_of_week(&self, day: u32) -> DayOfWeek {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/calendar.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut s = String::from_str("").unwrap();
[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 `calendar` (bin "calendar") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/calendar.rs:154:21
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let mut s = String::from_str("").unwrap();
[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 `calendar` (bin "calendar" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "634f5ecc423f62c2865d9319189e5d234ab683962d7ab2d3a79164c3d4291372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "634f5ecc423f62c2865d9319189e5d234ab683962d7ab2d3a79164c3d4291372", kill_on_drop: false }`
[INFO] [stdout] 634f5ecc423f62c2865d9319189e5d234ab683962d7ab2d3a79164c3d4291372