[INFO] cloning repository https://github.com/wydengyre/mp3stitch [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wydengyre/mp3stitch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwydengyre%2Fmp3stitch", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwydengyre%2Fmp3stitch'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5477233ae4183631d274cce6dd6d749a1228a8ff [INFO] checking wydengyre/mp3stitch 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%2Fwydengyre%2Fmp3stitch" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/wydengyre/mp3stitch [INFO] finished tweaking git repo https://github.com/wydengyre/mp3stitch [INFO] tweaked toml for git repo https://github.com/wydengyre/mp3stitch written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/wydengyre/mp3stitch 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/wydengyre/mp3stitch 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d32631fd484676b7bfa8a93bcca20f1891b407a4d93a6cc6d79a190df043aa34 [INFO] running `Command { std: "docker" "start" "-a" "d32631fd484676b7bfa8a93bcca20f1891b407a4d93a6cc6d79a190df043aa34", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d32631fd484676b7bfa8a93bcca20f1891b407a4d93a6cc6d79a190df043aa34", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d32631fd484676b7bfa8a93bcca20f1891b407a4d93a6cc6d79a190df043aa34", kill_on_drop: false }` [INFO] [stdout] d32631fd484676b7bfa8a93bcca20f1891b407a4d93a6cc6d79a190df043aa34 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 413b41f87c3a9a36b94128e85b5034a9c98399e63147fed5c6800daf8cea900f [INFO] running `Command { std: "docker" "start" "-a" "413b41f87c3a9a36b94128e85b5034a9c98399e63147fed5c6800daf8cea900f", kill_on_drop: false }` [INFO] [stderr] Checking embedded-io v0.6.1 [INFO] [stderr] Checking mp3stitch v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/integration.rs:99:70 [INFO] [stdout] | [INFO] [stdout] 99 | fn read(&mut self, buf: &mut [u8]) -> Result { [INFO] [stdout] | ______________________________________________________________________^ [INFO] [stdout] 100 | | let len = self.inner.len(); [INFO] [stdout] 101 | | if self.pos >= len { [INFO] [stdout] 102 | | return Ok(0); [INFO] [stdout] ... | [INFO] [stdout] 110 | | Ok(read_len) [INFO] [stdout] 111 | | } [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 [INFO] [stdout] --> tests/integration.rs:102:20 [INFO] [stdout] | [INFO] [stdout] 102 | return Ok(0); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/integration.rs:110:9 [INFO] [stdout] | [INFO] [stdout] 110 | Ok(read_len) [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/integration.rs:115:67 [INFO] [stdout] | [INFO] [stdout] 115 | fn seek(&mut self, pos: SeekFrom) -> Result { [INFO] [stdout] | ___________________________________________________________________^ [INFO] [stdout] 116 | | match pos { [INFO] [stdout] 117 | | SeekFrom::Start(pos) => { [INFO] [stdout] 118 | | self.pos = pos as usize; [INFO] [stdout] ... | [INFO] [stdout] 127 | | Ok(self.pos as u64) [INFO] [stdout] 128 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> tests/integration.rs:127:9 [INFO] [stdout] | [INFO] [stdout] 127 | Ok(self.pos as u64) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mp3stitch` (test "integration") due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "413b41f87c3a9a36b94128e85b5034a9c98399e63147fed5c6800daf8cea900f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "413b41f87c3a9a36b94128e85b5034a9c98399e63147fed5c6800daf8cea900f", kill_on_drop: false }` [INFO] [stdout] 413b41f87c3a9a36b94128e85b5034a9c98399e63147fed5c6800daf8cea900f