[INFO] crate coin-tosser 0.1.2 is already in cache
[INFO] testing coin-tosser-0.1.2 against 1.38.0 for beta-1.39-1
[INFO] extracting crate coin-tosser 0.1.2 into work/builds/worker-4/source
[INFO] validating manifest of crates.io crate coin-tosser 0.1.2 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate coin-tosser 0.1.2
[INFO] finished tweaking crates.io crate coin-tosser 0.1.2
[INFO] tweaked toml for crates.io crate coin-tosser 0.1.2 written to work/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate coin-tosser 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 20e07e0fa38a7b5909988710a7b7921a2d5086ceb80a3595e49af001a847ef3f
[INFO] running `"docker" "start" "-a" "20e07e0fa38a7b5909988710a7b7921a2d5086ceb80a3595e49af001a847ef3f"`
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling regex v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling cargo-readme v3.1.2
[INFO] [stderr]    Compiling coin-tosser v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/main.rs:9:7
[INFO] [stderr]   |
[INFO] [stderr] 9 |   for x in 0..number_of_rounds {
[INFO] [stderr]   |       ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:19:11
[INFO] [stderr]    |
[INFO] [stderr] 19 |       for x in 0..how_many_tosses {
[INFO] [stderr]    |           ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.00s
[INFO] running `"docker" "inspect" "20e07e0fa38a7b5909988710a7b7921a2d5086ceb80a3595e49af001a847ef3f"`
[INFO] running `"docker" "rm" "-f" "20e07e0fa38a7b5909988710a7b7921a2d5086ceb80a3595e49af001a847ef3f"`
[INFO] [stdout] 20e07e0fa38a7b5909988710a7b7921a2d5086ceb80a3595e49af001a847ef3f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 83b2f6056bc8b25b183d1f4194bd63ac5c7ca316948a4523ce536b8f3a3bab9c
[INFO] running `"docker" "start" "-a" "83b2f6056bc8b25b183d1f4194bd63ac5c7ca316948a4523ce536b8f3a3bab9c"`
[INFO] [stderr]    Compiling coin-tosser v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]  --> src/main.rs:9:7
[INFO] [stderr]   |
[INFO] [stderr] 9 |   for x in 0..number_of_rounds {
[INFO] [stderr]   |       ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:19:11
[INFO] [stderr]    |
[INFO] [stderr] 19 |       for x in 0..how_many_tosses {
[INFO] [stderr]    |           ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "83b2f6056bc8b25b183d1f4194bd63ac5c7ca316948a4523ce536b8f3a3bab9c"`
[INFO] running `"docker" "rm" "-f" "83b2f6056bc8b25b183d1f4194bd63ac5c7ca316948a4523ce536b8f3a3bab9c"`
[INFO] [stdout] 83b2f6056bc8b25b183d1f4194bd63ac5c7ca316948a4523ce536b8f3a3bab9c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 484b1fea86067a145371ad998537c3e1c91f1c02816a3fd1fc241bcaed3c5b68
[INFO] running `"docker" "start" "-a" "484b1fea86067a145371ad998537c3e1c91f1c02816a3fd1fc241bcaed3c5b68"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/coin_tosser-fa5af118427c1014
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "484b1fea86067a145371ad998537c3e1c91f1c02816a3fd1fc241bcaed3c5b68"`
[INFO] running `"docker" "rm" "-f" "484b1fea86067a145371ad998537c3e1c91f1c02816a3fd1fc241bcaed3c5b68"`
[INFO] [stdout] 484b1fea86067a145371ad998537c3e1c91f1c02816a3fd1fc241bcaed3c5b68