[INFO] fetching crate cowsay 0.14.0... [INFO] checking cowsay-0.14.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate cowsay 0.14.0 into /workspace/builds/worker-2-tc2/source [INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config [INFO] started tweaking crates.io crate cowsay 0.14.0 [INFO] finished tweaking crates.io crate cowsay 0.14.0 [INFO] tweaked toml for crates.io crate cowsay 0.14.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate cowsay 0.14.0 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 crates.io crate cowsay 0.14.0 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-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] 7aed0e43cb619e874f2dbd24075702992d7c6e325c4f55a7e1ccd0281df01fde [INFO] running `Command { std: "docker" "start" "-a" "7aed0e43cb619e874f2dbd24075702992d7c6e325c4f55a7e1ccd0281df01fde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7aed0e43cb619e874f2dbd24075702992d7c6e325c4f55a7e1ccd0281df01fde", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7aed0e43cb619e874f2dbd24075702992d7c6e325c4f55a7e1ccd0281df01fde", kill_on_drop: false }` [INFO] [stdout] 7aed0e43cb619e874f2dbd24075702992d7c6e325c4f55a7e1ccd0281df01fde [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] 1548bb2fd6746b63ae18afc038417b33b1f06eff2487ce821107e48fbe7fb757 [INFO] running `Command { std: "docker" "start" "-a" "1548bb2fd6746b63ae18afc038417b33b1f06eff2487ce821107e48fbe7fb757", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking colored v2.0.0 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Compiling structopt-derive v0.4.15 [INFO] [stderr] Checking structopt v0.3.22 [INFO] [stderr] Checking cowsay v0.14.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | / #[structopt(default_value = "Moo!")] [INFO] [stdout] 9 | | /// What does the cow say? [INFO] [stdout] 10 | | message: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cowsay` (bin "cowsay") due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/main.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | / #[structopt(default_value = "Moo!")] [INFO] [stdout] 9 | | /// What does the cow say? [INFO] [stdout] 10 | | message: String, [INFO] [stdout] | |___________________^ [INFO] [stdout] | [INFO] [stdout] = note: requested on the command line with `-D unmustuse-in-always-ok` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cowsay` (bin "cowsay" test) due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "1548bb2fd6746b63ae18afc038417b33b1f06eff2487ce821107e48fbe7fb757", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1548bb2fd6746b63ae18afc038417b33b1f06eff2487ce821107e48fbe7fb757", kill_on_drop: false }` [INFO] [stdout] 1548bb2fd6746b63ae18afc038417b33b1f06eff2487ce821107e48fbe7fb757