[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<Result<Infallible, Infallible>, 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<usize, Infallible>
[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<Result<Infallible, Infallible>, 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<usize, Infallible>
[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<Result<Infallible, Infallible>, 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<usize, Infallible>
[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<Result<Infallible, Infallible>, 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<usize, Infallible>
[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
