[INFO] cloning repository https://github.com/lopeetall/fields-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lopeetall/fields-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flopeetall%2Ffields-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flopeetall%2Ffields-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2bc4676d2aa902a1c31a3c2c72eae127a3cb6edf
[INFO] testing lopeetall/fields-rust against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flopeetall%2Ffields-rust" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lopeetall/fields-rust on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lopeetall/fields-rust
[INFO] finished tweaking git repo https://github.com/lopeetall/fields-rust
[INFO] tweaked toml for git repo https://github.com/lopeetall/fields-rust written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/lopeetall/fields-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bfc1b0142985b7cd7d3efb3454a11eb8d26f78e6f98ca54756f88c99e9eddb6d
[INFO] running `Command { std: "docker" "start" "-a" "bfc1b0142985b7cd7d3efb3454a11eb8d26f78e6f98ca54756f88c99e9eddb6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bfc1b0142985b7cd7d3efb3454a11eb8d26f78e6f98ca54756f88c99e9eddb6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfc1b0142985b7cd7d3efb3454a11eb8d26f78e6f98ca54756f88c99e9eddb6d", kill_on_drop: false }`
[INFO] [stdout] bfc1b0142985b7cd7d3efb3454a11eb8d26f78e6f98ca54756f88c99e9eddb6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb47ab8251b324b3a87745575094d5a178ad8b4a1181393e86a73d00be5fb5ea
[INFO] running `Command { std: "docker" "start" "-a" "eb47ab8251b324b3a87745575094d5a178ad8b4a1181393e86a73d00be5fb5ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling fields-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `rand`
[INFO] [stdout]   --> src/fields.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn rand () -> U256 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rand`
[INFO] [stdout]    --> src/fields.rs:363:12
[INFO] [stdout]     |
[INFO] [stdout] 363 |     pub fn rand (self) -> PrimeFieldElement {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.39s
[INFO] running `Command { std: "docker" "inspect" "eb47ab8251b324b3a87745575094d5a178ad8b4a1181393e86a73d00be5fb5ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb47ab8251b324b3a87745575094d5a178ad8b4a1181393e86a73d00be5fb5ea", kill_on_drop: false }`
[INFO] [stdout] eb47ab8251b324b3a87745575094d5a178ad8b4a1181393e86a73d00be5fb5ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b122d5e14ce742b4fc30948297e3ec01295470395be441fb22b4b55172b3560f
[INFO] running `Command { std: "docker" "start" "-a" "b122d5e14ce742b4fc30948297e3ec01295470395be441fb22b4b55172b3560f", kill_on_drop: false }`
[INFO] [stderr]    Compiling fields-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `rand`
[INFO] [stdout]   --> src/fields.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn rand () -> U256 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rand`
[INFO] [stdout]    --> src/fields.rs:363:12
[INFO] [stdout]     |
[INFO] [stdout] 363 |     pub fn rand (self) -> PrimeFieldElement {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "b122d5e14ce742b4fc30948297e3ec01295470395be441fb22b4b55172b3560f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b122d5e14ce742b4fc30948297e3ec01295470395be441fb22b4b55172b3560f", kill_on_drop: false }`
[INFO] [stdout] b122d5e14ce742b4fc30948297e3ec01295470395be441fb22b4b55172b3560f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9bc794dcd86b8d4c735fb5f8e58d45b24cd3eafc7636ffcf231dedd95cd0e417
[INFO] running `Command { std: "docker" "start" "-a" "9bc794dcd86b8d4c735fb5f8e58d45b24cd3eafc7636ffcf231dedd95cd0e417", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `rand`
[INFO] [stderr]   --> src/fields.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn rand () -> U256 {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `rand`
[INFO] [stderr]    --> src/fields.rs:363:12
[INFO] [stderr]     |
[INFO] [stderr] 363 |     pub fn rand (self) -> PrimeFieldElement {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fields-rust` (bin "fields-rust" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fields_rust-52b01e96f2547276)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9bc794dcd86b8d4c735fb5f8e58d45b24cd3eafc7636ffcf231dedd95cd0e417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bc794dcd86b8d4c735fb5f8e58d45b24cd3eafc7636ffcf231dedd95cd0e417", kill_on_drop: false }`
[INFO] [stdout] 9bc794dcd86b8d4c735fb5f8e58d45b24cd3eafc7636ffcf231dedd95cd0e417