[INFO] cloning repository https://github.com/loiclec/fuzzcheck-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loiclec/fuzzcheck-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b9ffecdb7dbd822d39673f836e5b337120648188 [INFO] checking loiclec/fuzzcheck-rs 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%2Floiclec%2Ffuzzcheck-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain [INFO] started tweaking git repo https://github.com/loiclec/fuzzcheck-rs [INFO] finished tweaking git repo https://github.com/loiclec/fuzzcheck-rs [INFO] tweaked toml for git repo https://github.com/loiclec/fuzzcheck-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck-rs 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 47 packages to latest compatible versions [INFO] [stderr] Adding ahash v0.7.8 (available: v0.8.12) [INFO] [stderr] Adding bit-vec v0.6.3 (available: v0.8.0) [INFO] [stderr] Adding fastrand v1.9.0 (available: v2.3.0) [INFO] [stderr] Adding md5 v0.7.0 (available: v0.8.0) [INFO] [stderr] Adding nu-ansi-term v0.46.0 (available: v0.50.3) [INFO] [stderr] Adding object v0.29.0 (available: v0.37.3) [INFO] [stderr] Adding regex-syntax v0.6.29 (available: v0.8.8) [INFO] [stderr] Adding ron v0.7.1 (available: v0.12.0) [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.110) [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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ed28cd18ff9a219c075261645d0ea6ed876d9acfebdef7aaa048d9b17f28cc21 [INFO] running `Command { std: "docker" "start" "-a" "ed28cd18ff9a219c075261645d0ea6ed876d9acfebdef7aaa048d9b17f28cc21", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ed28cd18ff9a219c075261645d0ea6ed876d9acfebdef7aaa048d9b17f28cc21", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ed28cd18ff9a219c075261645d0ea6ed876d9acfebdef7aaa048d9b17f28cc21", kill_on_drop: false }` [INFO] [stdout] ed28cd18ff9a219c075261645d0ea6ed876d9acfebdef7aaa048d9b17f28cc21 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7caceeb740c7c99368500b9b4ae818e0500c582ce0b50dd62f9d42353fb9d94a [INFO] running `Command { std: "docker" "start" "-a" "7caceeb740c7c99368500b9b4ae818e0500c582ce0b50dd62f9d42353fb9d94a", kill_on_drop: false }` [INFO] [stderr] Checking unicode-width v0.2.2 [INFO] [stderr] Compiling libz-sys v1.1.23 [INFO] [stderr] Compiling ahash v0.7.8 [INFO] [stderr] Compiling syn v2.0.110 [INFO] [stderr] Checking getrandom v0.2.16 [INFO] [stderr] Compiling fuzzcheck v0.13.0 (/opt/rustwide/workdir/fuzzcheck) [INFO] [stderr] Checking once_cell v1.21.3 [INFO] [stderr] Checking serde_json v1.0.145 [INFO] [stderr] Compiling fuzzcheck_mutators_derive v0.13.0 (/opt/rustwide/workdir/fuzzcheck_mutators_derive) [INFO] [stderr] Checking object v0.29.0 [INFO] [stderr] Checking getopts v0.2.24 [INFO] [stderr] Checking rustc-demangle v0.1.26 [INFO] [stderr] Checking fuzzcheck_common v0.13.0 (/opt/rustwide/workdir/fuzzcheck_common) [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> fuzzcheck_common/src/arg.rs:223:17 [INFO] [stdout] | [INFO] [stdout] 223 | |x| x.parse::().ok(), [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] --> fuzzcheck_common/src/arg.rs:234:17 [INFO] [stdout] | [INFO] [stdout] 234 | |x| x.parse::().ok(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> fuzzcheck_common/src/arg.rs:245:17 [INFO] [stdout] | [INFO] [stdout] 245 | |x| x.parse::().ok(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> fuzzcheck_common/src/arg.rs:256:17 [INFO] [stdout] | [INFO] [stdout] 256 | |x| x.parse::().ok(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> fuzzcheck_common/src/arg.rs:267:17 [INFO] [stdout] | [INFO] [stdout] 267 | |x| x.parse::().ok(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking flate2 v1.1.5 [INFO] [stderr] error: could not compile `fuzzcheck_common` (lib) due to 5 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "7caceeb740c7c99368500b9b4ae818e0500c582ce0b50dd62f9d42353fb9d94a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7caceeb740c7c99368500b9b4ae818e0500c582ce0b50dd62f9d42353fb9d94a", kill_on_drop: false }` [INFO] [stdout] 7caceeb740c7c99368500b9b4ae818e0500c582ce0b50dd62f9d42353fb9d94a