[INFO] cloning repository https://github.com/takus69/abc347
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/takus69/abc347" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakus69%2Fabc347", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftakus69%2Fabc347'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de984a0b0652ea06ffad2610871a1ba0a12133de
[INFO] checking takus69/abc347 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%2Ftakus69%2Fabc347" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/takus69/abc347
[INFO] finished tweaking git repo https://github.com/takus69/abc347
[INFO] tweaked toml for git repo https://github.com/takus69/abc347 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/takus69/abc347 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/takus69/abc347 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] 4c4be4fcfadf8b63772ea10a5548dbbf604762a30bcb132c0a891b8350356abc
[INFO] running `Command { std: "docker" "start" "-a" "4c4be4fcfadf8b63772ea10a5548dbbf604762a30bcb132c0a891b8350356abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c4be4fcfadf8b63772ea10a5548dbbf604762a30bcb132c0a891b8350356abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4be4fcfadf8b63772ea10a5548dbbf604762a30bcb132c0a891b8350356abc", kill_on_drop: false }`
[INFO] [stdout] 4c4be4fcfadf8b63772ea10a5548dbbf604762a30bcb132c0a891b8350356abc
[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] 3f8efa32acacd5859a028ba0bfbf8e2769226f5bed6ec60d0940d0e405934687
[INFO] running `Command { std: "docker" "start" "-a" "3f8efa32acacd5859a028ba0bfbf8e2769226f5bed6ec60d0940d0e405934687", kill_on_drop: false }`
[INFO] [stderr]     Checking proconio v0.4.5
[INFO] [stderr]     Checking abc347 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]   --> src/bin/c.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |         dd.push((di % (a+b)).try_into().unwrap());
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `nb` is assigned to, but never used
[INFO] [stdout]   --> src/bin/d.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut nb = b - cnt2;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_nb` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `a_cnt` is assigned to, but never used
[INFO] [stdout]   --> src/bin/d.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut a_cnt = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_a_cnt` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b_cnt` is assigned to, but never used
[INFO] [stdout]   --> src/bin/d.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut b_cnt = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_b_cnt` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nb` is never read
[INFO] [stdout]   --> src/bin/d.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     nb -= 1;
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |                     a_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:32:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                     a_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     b_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |                     b_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `C` should have a snake case name
[INFO] [stdout]  --> src/bin/d.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         C: i64,
[INFO] [stdout]   |         ^ help: convert the identifier to snake case (notice the capitalization): `c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `abc347` (bin "c") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable `nb` is assigned to, but never used
[INFO] [stdout]   --> src/bin/d.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut nb = b - cnt2;
[INFO] [stdout]    |             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_nb` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `a_cnt` is assigned to, but never used
[INFO] [stdout]   --> src/bin/d.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut a_cnt = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_a_cnt` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `b_cnt` is assigned to, but never used
[INFO] [stdout]   --> src/bin/d.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut b_cnt = 0;
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_b_cnt` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `nb` is never read
[INFO] [stdout]   --> src/bin/d.rs:36:21
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     nb -= 1;
[INFO] [stdout]    |                     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:44:21
[INFO] [stdout]    |
[INFO] [stdout] 44 |                     a_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:32:21
[INFO] [stdout]    |
[INFO] [stdout] 32 |                     a_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |                     b_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b_cnt` is never read
[INFO] [stdout]   --> src/bin/d.rs:37:21
[INFO] [stdout]    |
[INFO] [stdout] 37 |                     b_cnt += 1;
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `C` should have a snake case name
[INFO] [stdout]  --> src/bin/d.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         C: i64,
[INFO] [stdout]   |         ^ help: convert the identifier to snake case (notice the capitalization): `c`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]   --> src/bin/c.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |         dd.push((di % (a+b)).try_into().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 `abc347` (bin "c" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3f8efa32acacd5859a028ba0bfbf8e2769226f5bed6ec60d0940d0e405934687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f8efa32acacd5859a028ba0bfbf8e2769226f5bed6ec60d0940d0e405934687", kill_on_drop: false }`
[INFO] [stdout] 3f8efa32acacd5859a028ba0bfbf8e2769226f5bed6ec60d0940d0e405934687