[INFO] fetching crate sylvan_number 0.1.5...
[INFO] checking sylvan_number-0.1.5 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate sylvan_number 0.1.5 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate sylvan_number 0.1.5
[INFO] finished tweaking crates.io crate sylvan_number 0.1.5
[INFO] tweaked toml for crates.io crate sylvan_number 0.1.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sylvan_number 0.1.5 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e46960703f83e6d1e960eb8319fa95c483b98b0561cb5ba54c80fa08596b25f2
[INFO] running `Command { std: "docker" "start" "-a" "e46960703f83e6d1e960eb8319fa95c483b98b0561cb5ba54c80fa08596b25f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e46960703f83e6d1e960eb8319fa95c483b98b0561cb5ba54c80fa08596b25f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e46960703f83e6d1e960eb8319fa95c483b98b0561cb5ba54c80fa08596b25f2", kill_on_drop: false }`
[INFO] [stdout] e46960703f83e6d1e960eb8319fa95c483b98b0561cb5ba54c80fa08596b25f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b639da3f3c28de7b362b69ec802733723f25ad0dcabef3ba21bbd7a36288ff3f
[INFO] running `Command { std: "docker" "start" "-a" "b639da3f3c28de7b362b69ec802733723f25ad0dcabef3ba21bbd7a36288ff3f", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[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 num-rational v0.4.2
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking algebra_kit v0.1.15
[INFO] [stderr]     Checking sylvan_number v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::StderrLock`
[INFO] [stdout]  --> src/ubignumber.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::max, fmt::Debug, io::StderrLock, ops::{Add, AddAssign, BitOr, BitOrAssign, Div, DivAssign, Index, IndexMut, Mul, MulAssign...
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `thread_rng`
[INFO] [stdout]   --> src/lib.rs:13:16
[INFO] [stdout]    |
[INFO] [stdout] 13 |     use rand::{thread_rng, Rng};
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::StderrLock`
[INFO] [stdout]  --> src/ubignumber.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::max, fmt::Debug, io::StderrLock, ops::{Add, AddAssign, BitOr, BitOrAssign, Div, DivAssign, Index, IndexMut, Mul, MulAssign...
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ring`
[INFO] [stdout]  --> src/ubignumber.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | use algebra_kit::algebra::{EuclideanDomain, Ring};
[INFO] [stdout]   |                                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EuclideanDomain`
[INFO] [stdout]  --> src/ubignumber.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use algebra_kit::algebra::{EuclideanDomain, Ring};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ring`
[INFO] [stdout]   --> src/lib.rs:12:49
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use algebra_kit::algebra::{EuclideanDomain, Ring};
[INFO] [stdout]    |                                                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EuclideanDomain`
[INFO] [stdout]   --> src/lib.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use algebra_kit::algebra::{EuclideanDomain, Ring};
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Ring`
[INFO] [stdout]  --> src/ubignumber.rs:2:45
[INFO] [stdout]   |
[INFO] [stdout] 2 | use algebra_kit::algebra::{EuclideanDomain, Ring};
[INFO] [stdout]   |                                             ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EuclideanDomain`
[INFO] [stdout]  --> src/ubignumber.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use algebra_kit::algebra::{EuclideanDomain, Ring};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "b639da3f3c28de7b362b69ec802733723f25ad0dcabef3ba21bbd7a36288ff3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b639da3f3c28de7b362b69ec802733723f25ad0dcabef3ba21bbd7a36288ff3f", kill_on_drop: false }`
[INFO] [stdout] b639da3f3c28de7b362b69ec802733723f25ad0dcabef3ba21bbd7a36288ff3f