[INFO] cloning repository https://github.com/alonn24/rustlang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alonn24/rustlang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falonn24%2Frustlang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falonn24%2Frustlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 170039094ca130b44bac27c329c24ac1bd962160
[INFO] checking alonn24/rustlang 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%2Falonn24%2Frustlang" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/alonn24/rustlang
[INFO] finished tweaking git repo https://github.com/alonn24/rustlang
[INFO] tweaked toml for git repo https://github.com/alonn24/rustlang written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/alonn24/rustlang 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/alonn24/rustlang 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6e0d5eb56cf5dc7f3527d7a8945a6ebd30e5d9e2cc2cae123fdd08cc814469df
[INFO] running `Command { std: "docker" "start" "-a" "6e0d5eb56cf5dc7f3527d7a8945a6ebd30e5d9e2cc2cae123fdd08cc814469df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e0d5eb56cf5dc7f3527d7a8945a6ebd30e5d9e2cc2cae123fdd08cc814469df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e0d5eb56cf5dc7f3527d7a8945a6ebd30e5d9e2cc2cae123fdd08cc814469df", kill_on_drop: false }`
[INFO] [stdout] 6e0d5eb56cf5dc7f3527d7a8945a6ebd30e5d9e2cc2cae123fdd08cc814469df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d77f0582736b6b00beaa28a1341c738fef3b48002329c554e4114cdf640a8521
[INFO] running `Command { std: "docker" "start" "-a" "d77f0582736b6b00beaa28a1341c738fef3b48002329c554e4114cdf640a8521", kill_on_drop: false }`
[INFO] [stderr]     Checking difference v1.0.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking rustlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/adventofcode2019/day3/part2.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let mut found: Vec<((i32, i32))> = vec![];
[INFO] [stdout]    |                      ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 44 -   let mut found: Vec<((i32, i32))> = vec![];
[INFO] [stdout] 44 +   let mut found: Vec<(i32, i32) > = vec![];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pretty_assertions v0.4.1
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/adventofcode2019/day3/mod.rs:9:57
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let wires: Vec<String> = contents.split("\n").map(|s| s.parse().unwrap()).collect();
[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/adventofcode2019/day3/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     wires[0].parse().unwrap(),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/adventofcode2019/day3/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     wires[1].parse().unwrap()
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustlang` (bin "rustlang") due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/adventofcode2019/day3/part2.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |   let mut found: Vec<((i32, i32))> = vec![];
[INFO] [stdout]    |                      ^          ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 44 -   let mut found: Vec<((i32, i32))> = vec![];
[INFO] [stdout] 44 +   let mut found: Vec<(i32, i32) > = vec![];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]  --> src/adventofcode2019/day3/mod.rs:9:57
[INFO] [stdout]   |
[INFO] [stdout] 9 |   let wires: Vec<String> = contents.split("\n").map(|s| s.parse().unwrap()).collect();
[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/adventofcode2019/day3/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     wires[0].parse().unwrap(),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/adventofcode2019/day3/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     wires[1].parse().unwrap()
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustlang` (bin "rustlang" test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d77f0582736b6b00beaa28a1341c738fef3b48002329c554e4114cdf640a8521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d77f0582736b6b00beaa28a1341c738fef3b48002329c554e4114cdf640a8521", kill_on_drop: false }`
[INFO] [stdout] d77f0582736b6b00beaa28a1341c738fef3b48002329c554e4114cdf640a8521