[INFO] fetching crate semaphore-rs-witness 0.5.0...
[INFO] checking semaphore-rs-witness-0.5.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate semaphore-rs-witness 0.5.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate semaphore-rs-witness 0.5.0
[INFO] finished tweaking crates.io crate semaphore-rs-witness 0.5.0
[INFO] tweaked toml for crates.io crate semaphore-rs-witness 0.5.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate semaphore-rs-witness 0.5.0 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 semaphore-rs-witness 0.5.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 220f9ee1daea5aa5d7a7e4777b94f15bd0bb48c693d6fb48629c3538cfd3d843
[INFO] running `Command { std: "docker" "start" "-a" "220f9ee1daea5aa5d7a7e4777b94f15bd0bb48c693d6fb48629c3538cfd3d843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "220f9ee1daea5aa5d7a7e4777b94f15bd0bb48c693d6fb48629c3538cfd3d843", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "220f9ee1daea5aa5d7a7e4777b94f15bd0bb48c693d6fb48629c3538cfd3d843", kill_on_drop: false }`
[INFO] [stdout] 220f9ee1daea5aa5d7a7e4777b94f15bd0bb48c693d6fb48629c3538cfd3d843
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e621de20100d7d16e07b9e59a7b1b02d2f318ffd33d7cf771a1cfa69f5631314
[INFO] running `Command { std: "docker" "start" "-a" "e621de20100d7d16e07b9e59a7b1b02d2f318ffd33d7cf771a1cfa69f5631314", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling scratch v1.0.8
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling owo-colors v4.2.1
[INFO] [stderr]    Compiling codespan-reporting v0.12.0
[INFO] [stderr]    Compiling cc v1.2.25
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking gimli v0.31.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]    Compiling color-spantrace v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]     Checking miniz_oxide v0.8.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking tracing-error v0.2.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking bytemuck v1.23.0
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]     Checking cobs v0.2.3
[INFO] [stderr]     Checking addr2line v0.24.2
[INFO] [stderr]    Compiling cxx-build v1.0.158
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling ark-serialize-derive v0.4.2
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[INFO] [stderr]    Compiling ark-ff-asm v0.4.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking backtrace v0.3.75
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]     Checking color-eyre v0.6.5
[INFO] [stderr]    Compiling semaphore-rs-witness v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking postcard v1.1.1
[INFO] [stderr]     Checking ark-poly v0.4.2
[INFO] [stderr]     Checking ruint v1.15.0
[INFO] [stderr]     Checking ark-ec v0.4.2
[INFO] [stderr]     Checking ark-bn254 v0.4.0
[INFO] [stdout] error: this type will no longer be must used: Result<Uint<256, 4>, Infallible>
[INFO] [stdout]    --> src/graph.rs:143:18
[INFO] [stdout]     |
[INFO] [stdout] 143 |         out[i] = U256::try_from(values[outputs[i]].into_bigint()).unwrap();
[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<Uint<256, 4>, Infallible>
[INFO] [stdout]    --> src/graph.rs:143:18
[INFO] [stdout]     |
[INFO] [stdout] 143 |         out[i] = U256::try_from(values[outputs[i]].into_bigint()).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 `semaphore-rs-witness` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `semaphore-rs-witness` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e621de20100d7d16e07b9e59a7b1b02d2f318ffd33d7cf771a1cfa69f5631314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e621de20100d7d16e07b9e59a7b1b02d2f318ffd33d7cf771a1cfa69f5631314", kill_on_drop: false }`
[INFO] [stdout] e621de20100d7d16e07b9e59a7b1b02d2f318ffd33d7cf771a1cfa69f5631314