[INFO] fetching crate starling 4.0.0... [INFO] checking starling-4.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate starling 4.0.0 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate starling 4.0.0 [INFO] finished tweaking crates.io crate starling 4.0.0 [INFO] tweaked toml for crates.io crate starling 4.0.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate starling 4.0.0 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 starling 4.0.0 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 45bc887fe60069ae9fe8505e554a01c896713bc135fd77da9b78bafedaf70626 [INFO] running `Command { std: "docker" "start" "-a" "45bc887fe60069ae9fe8505e554a01c896713bc135fd77da9b78bafedaf70626", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "45bc887fe60069ae9fe8505e554a01c896713bc135fd77da9b78bafedaf70626", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "45bc887fe60069ae9fe8505e554a01c896713bc135fd77da9b78bafedaf70626", kill_on_drop: false }` [INFO] [stdout] 45bc887fe60069ae9fe8505e554a01c896713bc135fd77da9b78bafedaf70626 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 82319b1415c1bb8cae0a372d4cdb6450d862475ad2e9d66115702b042f09300b [INFO] running `Command { std: "docker" "start" "-a" "82319b1415c1bb8cae0a372d4cdb6450d862475ad2e9d66115702b042f09300b", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.138 [INFO] [stderr] Compiling semver v1.0.12 [INFO] [stderr] Compiling crossbeam-utils v0.8.10 [INFO] [stderr] Checking once_cell v1.12.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.9 [INFO] [stderr] Compiling unicode-ident v1.0.1 [INFO] [stderr] Checking getrandom v0.2.7 [INFO] [stderr] Checking plotters-backend v0.3.2 [INFO] [stderr] Compiling proc-macro2 v1.0.40 [INFO] [stderr] Compiling serde_derive v1.0.138 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking plotters-svg v0.3.1 [INFO] [stderr] Checking regex-syntax v0.6.26 [INFO] [stderr] Compiling starling v4.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking plotters v0.3.1 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Compiling rustc_version v0.4.0 [INFO] [stderr] Compiling quote v1.0.20 [INFO] [stdout] error: this type will no longer be must used: ControlFlow, usize> [INFO] [stdout] --> src/utils/tree_utils.rs:31:29 [INFO] [stdout] | [INFO] [stdout] 31 | let extracted_bit = usize::try_from(*v)? >> (7 - shift) & 1; [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/utils/tree_utils.rs:31:29 [INFO] [stdout] | [INFO] [stdout] 31 | let extracted_bit = usize::try_from(*v)? >> (7 - shift) & 1; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: ControlFlow, usize> [INFO] [stdout] --> src/utils/tree_utils.rs:95:53 [INFO] [stdout] | [INFO] [stdout] 95 | let split_bit = (byte << 3_usize) + 7 - usize::try_from(fast_log_2(xor_key))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/utils/tree_utils.rs:95:53 [INFO] [stdout] | [INFO] [stdout] 95 | let split_bit = (byte << 3_usize) + 7 - usize::try_from(fast_log_2(xor_key))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: ControlFlow, usize> [INFO] [stdout] --> src/utils/tree_utils.rs:149:48 [INFO] [stdout] | [INFO] [stdout] 149 | split_bit = (i << 3_usize) + 7_usize - usize::try_from(fast_log_2(xor_key))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/utils/tree_utils.rs:149:48 [INFO] [stdout] | [INFO] [stdout] 149 | split_bit = (i << 3_usize) + 7_usize - usize::try_from(fast_log_2(xor_key))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: ControlFlow, usize> [INFO] [stdout] --> src/utils/tree_utils.rs:208:55 [INFO] [stdout] | [INFO] [stdout] 208 | let split_bit = (j * 8_usize) + 7_usize - usize::try_from(fast_log_2(xor_key))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/utils/tree_utils.rs:208:55 [INFO] [stdout] | [INFO] [stdout] 208 | let split_bit = (j * 8_usize) + 7_usize - usize::try_from(fast_log_2(xor_key))?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking crossbeam-deque v0.8.1 [INFO] [stderr] error: could not compile `starling` (lib) due to 8 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "82319b1415c1bb8cae0a372d4cdb6450d862475ad2e9d66115702b042f09300b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "82319b1415c1bb8cae0a372d4cdb6450d862475ad2e9d66115702b042f09300b", kill_on_drop: false }` [INFO] [stdout] 82319b1415c1bb8cae0a372d4cdb6450d862475ad2e9d66115702b042f09300b