[INFO] cloning repository https://github.com/Lyr-7D1h/randomness_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lyr-7D1h/randomness_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLyr-7D1h%2Frandomness_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLyr-7D1h%2Frandomness_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90cb785f329229fcd166ad016cd33ccf15011464
[INFO] testing Lyr-7D1h/randomness_test against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLyr-7D1h%2Frandomness_test" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lyr-7D1h/randomness_test on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lyr-7D1h/randomness_test
[INFO] finished tweaking git repo https://github.com/Lyr-7D1h/randomness_test
[INFO] tweaked toml for git repo https://github.com/Lyr-7D1h/randomness_test written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Lyr-7D1h/randomness_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57a13441acdce31452d51b5e8c9411d6ddbad3961d628bf024eb1fa319fb700f
[INFO] running `Command { std: "docker" "start" "-a" "57a13441acdce31452d51b5e8c9411d6ddbad3961d628bf024eb1fa319fb700f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57a13441acdce31452d51b5e8c9411d6ddbad3961d628bf024eb1fa319fb700f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57a13441acdce31452d51b5e8c9411d6ddbad3961d628bf024eb1fa319fb700f", kill_on_drop: false }`
[INFO] [stdout] 57a13441acdce31452d51b5e8c9411d6ddbad3961d628bf024eb1fa319fb700f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9e337cd47670d7480f09c1c865d0997e63f15329bae88bd12678f580d7f2d0e
[INFO] running `Command { std: "docker" "start" "-a" "b9e337cd47670d7480f09c1c865d0997e63f15329bae88bd12678f580d7f2d0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling bytemuck v1.5.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling walkdir v2.3.1
[INFO] [stderr]    Compiling gif v0.10.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling stb_truetype v0.3.1
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling png v0.15.3
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling png v0.16.8
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling freetype v0.4.1
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling rusttype v0.8.3
[INFO] [stderr]    Compiling font-kit v0.7.1
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling image v0.22.5
[INFO] [stderr]    Compiling image v0.23.12
[INFO] [stderr]    Compiling plotters-bitmap v0.3.0
[INFO] [stderr]    Compiling plotters v0.3.0
[INFO] [stderr]    Compiling randomness_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rev`
[INFO] [stdout]  --> src/main.rs:5:36
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn print_count(count: &Vec<usize>, rev: usize) {
[INFO] [stdout]   |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_rev`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.05s
[INFO] running `Command { std: "docker" "inspect" "b9e337cd47670d7480f09c1c865d0997e63f15329bae88bd12678f580d7f2d0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e337cd47670d7480f09c1c865d0997e63f15329bae88bd12678f580d7f2d0e", kill_on_drop: false }`
[INFO] [stdout] b9e337cd47670d7480f09c1c865d0997e63f15329bae88bd12678f580d7f2d0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38fc186a1b96b2f95a4720317fb2d9428793a91d80c1c200946922d160843454
[INFO] running `Command { std: "docker" "start" "-a" "38fc186a1b96b2f95a4720317fb2d9428793a91d80c1c200946922d160843454", kill_on_drop: false }`
[INFO] [stderr]    Compiling randomness_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rev`
[INFO] [stdout]  --> src/main.rs:5:36
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn print_count(count: &Vec<usize>, rev: usize) {
[INFO] [stdout]   |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_rev`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "38fc186a1b96b2f95a4720317fb2d9428793a91d80c1c200946922d160843454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38fc186a1b96b2f95a4720317fb2d9428793a91d80c1c200946922d160843454", kill_on_drop: false }`
[INFO] [stdout] 38fc186a1b96b2f95a4720317fb2d9428793a91d80c1c200946922d160843454
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 328b1eb11264721004c0631a056f4249800d38f114fb56c840d32ac2f6cd3f4d
[INFO] running `Command { std: "docker" "start" "-a" "328b1eb11264721004c0631a056f4249800d38f114fb56c840d32ac2f6cd3f4d", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `rev`
[INFO] [stderr]  --> src/main.rs:5:36
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn print_count(count: &Vec<usize>, rev: usize) {
[INFO] [stderr]   |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_rev`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `randomness_test` (bin "randomness_test" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/randomness_test-72e290dfcc537604)
[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" "328b1eb11264721004c0631a056f4249800d38f114fb56c840d32ac2f6cd3f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "328b1eb11264721004c0631a056f4249800d38f114fb56c840d32ac2f6cd3f4d", kill_on_drop: false }`
[INFO] [stdout] 328b1eb11264721004c0631a056f4249800d38f114fb56c840d32ac2f6cd3f4d