[INFO] cloning repository https://github.com/HarshitJoshi9152/diffr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HarshitJoshi9152/diffr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarshitJoshi9152%2Fdiffr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarshitJoshi9152%2Fdiffr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d85ac3ed21f1cac590d0cdce06f4e241018c9f9
[INFO] checking HarshitJoshi9152/diffr 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%2FHarshitJoshi9152%2Fdiffr" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/HarshitJoshi9152/diffr
[INFO] finished tweaking git repo https://github.com/HarshitJoshi9152/diffr
[INFO] tweaked toml for git repo https://github.com/HarshitJoshi9152/diffr written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/HarshitJoshi9152/diffr 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/HarshitJoshi9152/diffr 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] [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] b5222870dec2d20f92d44c298e61e0aeac370f0a5605747f560983d79aacdd7d
[INFO] running `Command { std: "docker" "start" "-a" "b5222870dec2d20f92d44c298e61e0aeac370f0a5605747f560983d79aacdd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5222870dec2d20f92d44c298e61e0aeac370f0a5605747f560983d79aacdd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5222870dec2d20f92d44c298e61e0aeac370f0a5605747f560983d79aacdd7d", kill_on_drop: false }`
[INFO] [stdout] b5222870dec2d20f92d44c298e61e0aeac370f0a5605747f560983d79aacdd7d
[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] 1ebdb9f8ec41b602fbf82a5197dad082add732cb28240793fbb934ea12d10c4a
[INFO] running `Command { std: "docker" "start" "-a" "1ebdb9f8ec41b602fbf82a5197dad082add732cb28240793fbb934ea12d10c4a", kill_on_drop: false }`
[INFO] [stderr]     Checking diffr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let args: Cli = Cli {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file1` and `file2` are never read
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Cli {
[INFO] [stdout]   |        --- fields in this struct
[INFO] [stdout] 4 |     file1: PathBuf,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     file2: PathBuf,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let args: Cli = Cli {
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         file1: PathBuf::try_from(&file1).expect("File1 is an invalid path !"),
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |         file2: PathBuf::try_from(&file2).expect("File2 is an invalid path !"),
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file1` and `file2` are never read
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Cli {
[INFO] [stdout]   |        --- fields in this struct
[INFO] [stdout] 4 |     file1: PathBuf,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 5 |     file2: PathBuf,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |         file1: PathBuf::try_from(&file1).expect("File1 is an invalid path !"),
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/main.rs:14:16
[INFO] [stdout]    |
[INFO] [stdout] 14 |         file2: PathBuf::try_from(&file2).expect("File2 is an invalid path !"),
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `diffr` (bin "diffr" test) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `diffr` (bin "diffr") due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "1ebdb9f8ec41b602fbf82a5197dad082add732cb28240793fbb934ea12d10c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ebdb9f8ec41b602fbf82a5197dad082add732cb28240793fbb934ea12d10c4a", kill_on_drop: false }`
[INFO] [stdout] 1ebdb9f8ec41b602fbf82a5197dad082add732cb28240793fbb934ea12d10c4a