[INFO] fetching crate raffle 0.0.1... [INFO] checking raffle-0.0.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate raffle 0.0.1 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate raffle 0.0.1 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate raffle 0.0.1 [INFO] tweaked toml for crates.io crate raffle 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate raffle 0.0.1 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 raffle 0.0.1 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-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] 24256f2a785be4d19228de9618311adc91be207e02f28997b1d13da77071ac79 [INFO] running `Command { std: "docker" "start" "-a" "24256f2a785be4d19228de9618311adc91be207e02f28997b1d13da77071ac79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "24256f2a785be4d19228de9618311adc91be207e02f28997b1d13da77071ac79", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "24256f2a785be4d19228de9618311adc91be207e02f28997b1d13da77071ac79", kill_on_drop: false }` [INFO] [stdout] 24256f2a785be4d19228de9618311adc91be207e02f28997b1d13da77071ac79 [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] cb4ccd0a8965f2f8c33617431da3dd98b6a1901b8d0909d125ef21c141e4003e [INFO] running `Command { std: "docker" "start" "-a" "cb4ccd0a8965f2f8c33617431da3dd98b6a1901b8d0909d125ef21c141e4003e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling cc v1.0.90 [INFO] [stderr] Checking arrayvec v0.7.4 [INFO] [stderr] Checking raffle v0.0.1 (/opt/rustwide/workdir) [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Compiling blake3 v1.5.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/generate_raffle_parameters.rs:14:9 [INFO] [stdout] | [INFO] [stdout] 14 | VouchingParameters::generate(|| Ok::(rng.gen())).unwrap() [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 `raffle` (example "generate_raffle_parameters") due to 5 previous errors [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/generate_raffle_parameters.rs:14:41 [INFO] [stdout] | [INFO] [stdout] 14 | VouchingParameters::generate(|| Ok::(rng.gen())).unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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] --> examples/generate_raffle_parameters.rs:25:28 [INFO] [stdout] | [INFO] [stdout] 25 | let generator = || { [INFO] [stdout] | ____________________________^ [INFO] [stdout] 26 | | let mut buf = [0u8; 8]; [INFO] [stdout] 27 | | reader.fill(&mut buf); [INFO] [stdout] ... | [INFO] [stdout] 30 | | }; [INFO] [stdout] | |_________^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/generate_raffle_parameters.rs:29:13 [INFO] [stdout] | [INFO] [stdout] 29 | Ok::(u64::from_le_bytes(buf)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> examples/generate_raffle_parameters.rs:31:9 [INFO] [stdout] | [INFO] [stdout] 31 | VouchingParameters::generate(generator).unwrap() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "cb4ccd0a8965f2f8c33617431da3dd98b6a1901b8d0909d125ef21c141e4003e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb4ccd0a8965f2f8c33617431da3dd98b6a1901b8d0909d125ef21c141e4003e", kill_on_drop: false }` [INFO] [stdout] cb4ccd0a8965f2f8c33617431da3dd98b6a1901b8d0909d125ef21c141e4003e