[INFO] cloning repository https://github.com/SylvanM/sylvan_number
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SylvanM/sylvan_number" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSylvanM%2Fsylvan_number", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSylvanM%2Fsylvan_number'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1041dd9707b13a023e5bcd59c5a5aa24c4172946
[INFO] building SylvanM/sylvan_number against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSylvanM%2Fsylvan_number" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SylvanM/sylvan_number on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SylvanM/sylvan_number
[INFO] finished tweaking git repo https://github.com/SylvanM/sylvan_number
[INFO] tweaked toml for git repo https://github.com/SylvanM/sylvan_number written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/SylvanM/sylvan_number 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded algebra_kit v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b96027a274f8e7bc2a4472caef8f4ab05a200ee108fff367f95d2baf49cd36fd
[INFO] running `Command { std: "docker" "start" "-a" "b96027a274f8e7bc2a4472caef8f4ab05a200ee108fff367f95d2baf49cd36fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b96027a274f8e7bc2a4472caef8f4ab05a200ee108fff367f95d2baf49cd36fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b96027a274f8e7bc2a4472caef8f4ab05a200ee108fff367f95d2baf49cd36fd", kill_on_drop: false }`
[INFO] [stdout] b96027a274f8e7bc2a4472caef8f4ab05a200ee108fff367f95d2baf49cd36fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79c8522c3118bd3998d1a9f0e48fc7b4576f31fd667193aad702ca60da49ddb0
[INFO] running `Command { std: "docker" "start" "-a" "79c8522c3118bd3998d1a9f0e48fc7b4576f31fd667193aad702ca60da49ddb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling algebra_kit v0.1.8
[INFO] [stderr]    Compiling 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: `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 1.35s
[INFO] running `Command { std: "docker" "inspect" "79c8522c3118bd3998d1a9f0e48fc7b4576f31fd667193aad702ca60da49ddb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79c8522c3118bd3998d1a9f0e48fc7b4576f31fd667193aad702ca60da49ddb0", kill_on_drop: false }`
[INFO] [stdout] 79c8522c3118bd3998d1a9f0e48fc7b4576f31fd667193aad702ca60da49ddb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ee2166183d9091727b6ded1e7986177ec559ce47cea8c1eb69deab50eff014e
[INFO] running `Command { std: "docker" "start" "-a" "3ee2166183d9091727b6ded1e7986177ec559ce47cea8c1eb69deab50eff014e", kill_on_drop: false }`
[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] [stderr]    Compiling sylvan_number v0.1.5 (/opt/rustwide/workdir)
[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: `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: `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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "3ee2166183d9091727b6ded1e7986177ec559ce47cea8c1eb69deab50eff014e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ee2166183d9091727b6ded1e7986177ec559ce47cea8c1eb69deab50eff014e", kill_on_drop: false }`
[INFO] [stdout] 3ee2166183d9091727b6ded1e7986177ec559ce47cea8c1eb69deab50eff014e