[INFO] fetching crate light-merkle-tree-reference 4.0.0...
[INFO] checking light-merkle-tree-reference-4.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate light-merkle-tree-reference 4.0.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate light-merkle-tree-reference 4.0.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate light-merkle-tree-reference 4.0.0
[INFO] tweaked toml for crates.io crate light-merkle-tree-reference 4.0.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate light-merkle-tree-reference 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 light-merkle-tree-reference 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-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] 2228ac023f737a17f76f5773fa24dfc75acc55753602c54341f27d8e93efcdb2
[INFO] running `Command { std: "docker" "start" "-a" "2228ac023f737a17f76f5773fa24dfc75acc55753602c54341f27d8e93efcdb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2228ac023f737a17f76f5773fa24dfc75acc55753602c54341f27d8e93efcdb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2228ac023f737a17f76f5773fa24dfc75acc55753602c54341f27d8e93efcdb2", kill_on_drop: false }`
[INFO] [stdout] 2228ac023f737a17f76f5773fa24dfc75acc55753602c54341f27d8e93efcdb2
[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] 11e73be3730956b79baa2db712e7ffa76a1cf5b9e29e3b6cbbf54070605a3e78
[INFO] running `Command { std: "docker" "start" "-a" "11e73be3730956b79baa2db712e7ffa76a1cf5b9e29e3b6cbbf54070605a3e78", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking allocator-api2 v0.2.21
[INFO] [stderr]     Checking ahash v0.8.12
[INFO] [stderr]     Checking tinyvec v1.10.0
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking hashbrown v0.15.5
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ark-std v0.5.0
[INFO] [stderr]    Compiling enum-ordinalize-derive v4.3.1
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling ark-serialize-derive v0.5.0
[INFO] [stderr]    Compiling ark-ff-asm v0.5.0
[INFO] [stderr]    Compiling ark-ff-macros v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]     Checking ark-serialize v0.5.0
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]    Compiling enum-ordinalize v4.3.0
[INFO] [stderr]    Compiling educe v0.6.0
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking thiserror v2.0.17
[INFO] [stderr]     Checking ark-ff v0.5.0
[INFO] [stderr]     Checking ark-poly v0.5.0
[INFO] [stderr]     Checking ark-ec v0.5.0
[INFO] [stderr]     Checking ark-bn254 v0.5.0
[INFO] [stderr]     Checking light-poseidon v0.3.0
[INFO] [stderr]     Checking light-hasher v5.0.0
[INFO] [stderr]     Checking light-indexed-array v0.3.0
[INFO] [stderr]     Checking light-merkle-tree-reference v4.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/indexed.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |             usize::try_from(new_low_element.index).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<usize, Infallible>
[INFO] [stdout]    --> src/indexed.rs:151:36
[INFO] [stdout]     |
[INFO] [stdout] 151 |             self.get_proof_of_leaf(usize::try_from(low_element.index).unwrap(), true)?;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `light-merkle-tree-reference` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/indexed.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |             usize::try_from(new_low_element.index).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<usize, Infallible>
[INFO] [stdout]    --> src/indexed.rs:151:36
[INFO] [stdout]     |
[INFO] [stdout] 151 |             self.get_proof_of_leaf(usize::try_from(low_element.index).unwrap(), true)?;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `light-merkle-tree-reference` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "11e73be3730956b79baa2db712e7ffa76a1cf5b9e29e3b6cbbf54070605a3e78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11e73be3730956b79baa2db712e7ffa76a1cf5b9e29e3b6cbbf54070605a3e78", kill_on_drop: false }`
[INFO] [stdout] 11e73be3730956b79baa2db712e7ffa76a1cf5b9e29e3b6cbbf54070605a3e78