[INFO] cloning repository https://github.com/wainwrightmark/finite_state_transducer [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wainwrightmark/finite_state_transducer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwainwrightmark%2Ffinite_state_transducer", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwainwrightmark%2Ffinite_state_transducer'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fe01290c5df427b6592fe5b84bd2e4dd1b357d8f [INFO] checking wainwrightmark/finite_state_transducer 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%2Fwainwrightmark%2Ffinite_state_transducer" "/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/wainwrightmark/finite_state_transducer [INFO] finished tweaking git repo https://github.com/wainwrightmark/finite_state_transducer [INFO] tweaked toml for git repo https://github.com/wainwrightmark/finite_state_transducer written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/wainwrightmark/finite_state_transducer 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/wainwrightmark/finite_state_transducer 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] efc6461cd53fa5512f2a13ee305c44d8af08365f169b1cca000054b1197ac323 [INFO] running `Command { std: "docker" "start" "-a" "efc6461cd53fa5512f2a13ee305c44d8af08365f169b1cca000054b1197ac323", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "efc6461cd53fa5512f2a13ee305c44d8af08365f169b1cca000054b1197ac323", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "efc6461cd53fa5512f2a13ee305c44d8af08365f169b1cca000054b1197ac323", kill_on_drop: false }` [INFO] [stdout] efc6461cd53fa5512f2a13ee305c44d8af08365f169b1cca000054b1197ac323 [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] f7a96b56c1d1396efb615180d77329b86f3905dcc3a2cdb22c677de96e7daca5 [INFO] running `Command { std: "docker" "start" "-a" "f7a96b56c1d1396efb615180d77329b86f3905dcc3a2cdb22c677de96e7daca5", kill_on_drop: false }` [INFO] [stderr] Checking const_sized_bit_set v0.3.0 [INFO] [stderr] Checking finite_state_transducer v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/frozen.rs:111:21 [INFO] [stdout] | [INFO] [stdout] 111 | let pluto = CharVec::from_str("pluto").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] error: this type will no longer be must used: Result [INFO] [stdout] --> src/frozen.rs:112:21 [INFO] [stdout] | [INFO] [stdout] 112 | let goofy = CharVec::from_str("goofy").unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/mutable.rs:269:20 [INFO] [stdout] | [INFO] [stdout] 269 | let mark = CharVec::from_str("Mark").unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/mutable.rs:270:19 [INFO] [stdout] | [INFO] [stdout] 270 | let mar = CharVec::from_str("Mar").unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/mutable.rs:299:24 [INFO] [stdout] | [INFO] [stdout] 299 | let word = CharVec::from_str(word).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/mutable.rs:311:24 [INFO] [stdout] | [INFO] [stdout] 311 | let word = CharVec::from_str(word).unwrap(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:82:57 [INFO] [stdout] | [INFO] [stdout] 82 | fn from_str(s: &str) -> Result { [INFO] [stdout] | _________________________________________________________^ [INFO] [stdout] 83 | | let mut v = vec![]; [INFO] [stdout] 84 | | [INFO] [stdout] 85 | | for c in s.chars() { [INFO] [stdout] ... | [INFO] [stdout] 91 | | Ok(Self(v)) [INFO] [stdout] 92 | | } [INFO] [stdout] | |_________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:91:13 [INFO] [stdout] | [INFO] [stdout] 91 | Ok(Self(v)) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `finite_state_transducer` (lib test) due to 8 previous errors [INFO] running `Command { std: "docker" "inspect" "f7a96b56c1d1396efb615180d77329b86f3905dcc3a2cdb22c677de96e7daca5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7a96b56c1d1396efb615180d77329b86f3905dcc3a2cdb22c677de96e7daca5", kill_on_drop: false }` [INFO] [stdout] f7a96b56c1d1396efb615180d77329b86f3905dcc3a2cdb22c677de96e7daca5