[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 master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flopeetall%2Ffields-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[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-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lopeetall/fields-rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lopeetall/fields-rust 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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e82ffe34f88ae89227430a5247a9eab0f51bf519fd09ce4ca767d34b6d61a59
[INFO] running `Command { std: "docker" "start" "-a" "7e82ffe34f88ae89227430a5247a9eab0f51bf519fd09ce4ca767d34b6d61a59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e82ffe34f88ae89227430a5247a9eab0f51bf519fd09ce4ca767d34b6d61a59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e82ffe34f88ae89227430a5247a9eab0f51bf519fd09ce4ca767d34b6d61a59", kill_on_drop: false }`
[INFO] [stdout] 7e82ffe34f88ae89227430a5247a9eab0f51bf519fd09ce4ca767d34b6d61a59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 226016fbbfb0af0bdf1ae1b43423271e8d66ea24cda4cbab23a11796087ce5f2
[INFO] running `Command { std: "docker" "start" "-a" "226016fbbfb0af0bdf1ae1b43423271e8d66ea24cda4cbab23a11796087ce5f2", kill_on_drop: false }`
[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 `rand` is never used
[INFO] [stdout]   --> src/fields.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl U256 {
[INFO] [stdout]    | --------- associated function in this implementation
[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: method `rand` is never used
[INFO] [stdout]    --> src/fields.rs:363:12
[INFO] [stdout]     |
[INFO] [stdout] 356 | impl PrimeField {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 363 |     pub fn rand (self) -> PrimeFieldElement {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `Command { std: "docker" "inspect" "226016fbbfb0af0bdf1ae1b43423271e8d66ea24cda4cbab23a11796087ce5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226016fbbfb0af0bdf1ae1b43423271e8d66ea24cda4cbab23a11796087ce5f2", kill_on_drop: false }`
[INFO] [stdout] 226016fbbfb0af0bdf1ae1b43423271e8d66ea24cda4cbab23a11796087ce5f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0752f7ce8249e43fe8338f52a5076b00055e2a2324433800430149fd9c300729
[INFO] running `Command { std: "docker" "start" "-a" "0752f7ce8249e43fe8338f52a5076b00055e2a2324433800430149fd9c300729", kill_on_drop: false }`
[INFO] [stderr]    Compiling fields-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `rand` is never used
[INFO] [stdout]   --> src/fields.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl U256 {
[INFO] [stdout]    | --------- associated function in this implementation
[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: method `rand` is never used
[INFO] [stdout]    --> src/fields.rs:363:12
[INFO] [stdout]     |
[INFO] [stdout] 356 | impl PrimeField {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 363 |     pub fn rand (self) -> PrimeFieldElement {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "0752f7ce8249e43fe8338f52a5076b00055e2a2324433800430149fd9c300729", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0752f7ce8249e43fe8338f52a5076b00055e2a2324433800430149fd9c300729", kill_on_drop: false }`
[INFO] [stdout] 0752f7ce8249e43fe8338f52a5076b00055e2a2324433800430149fd9c300729
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fb1f2b3a37f093cbc84406adb707f607b3dbbbe09094dcd2ee0c61957eeb8bdb
[INFO] running `Command { std: "docker" "start" "-a" "fb1f2b3a37f093cbc84406adb707f607b3dbbbe09094dcd2ee0c61957eeb8bdb", kill_on_drop: false }`
[INFO] [stderr] warning: associated function `rand` is never used
[INFO] [stderr]   --> src/fields.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl U256 {
[INFO] [stderr]    | --------- associated function in this implementation
[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: method `rand` is never used
[INFO] [stderr]    --> src/fields.rs:363:12
[INFO] [stderr]     |
[INFO] [stderr] 356 | impl PrimeField {
[INFO] [stderr]     | --------------- method in this implementation
[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` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fields_rust-f4377740049205a4)
[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" "fb1f2b3a37f093cbc84406adb707f607b3dbbbe09094dcd2ee0c61957eeb8bdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb1f2b3a37f093cbc84406adb707f607b3dbbbe09094dcd2ee0c61957eeb8bdb", kill_on_drop: false }`
[INFO] [stdout] fb1f2b3a37f093cbc84406adb707f607b3dbbbe09094dcd2ee0c61957eeb8bdb