[INFO] fetching crate chars_counter 0.1.1...
[INFO] testing chars_counter-0.1.1 against 1.59.0 for beta-1.60-1
[INFO] extracting crate chars_counter 0.1.1 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate chars_counter 0.1.1 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chars_counter 0.1.1
[INFO] finished tweaking crates.io crate chars_counter 0.1.1
[INFO] tweaked toml for crates.io crate chars_counter 0.1.1 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe1ac4ff29c469fea62b1a15b7e059b87105446ad00be8910bacc1276e53ba1e
[INFO] running `Command { std: "docker" "start" "-a" "fe1ac4ff29c469fea62b1a15b7e059b87105446ad00be8910bacc1276e53ba1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe1ac4ff29c469fea62b1a15b7e059b87105446ad00be8910bacc1276e53ba1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe1ac4ff29c469fea62b1a15b7e059b87105446ad00be8910bacc1276e53ba1e", kill_on_drop: false }`
[INFO] [stdout] fe1ac4ff29c469fea62b1a15b7e059b87105446ad00be8910bacc1276e53ba1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f5647e9cb6feb03b4d83326c85a44c35cf67912e97f0430da3051075308ef6e
[INFO] running `Command { std: "docker" "start" "-a" "6f5647e9cb6feb03b4d83326c85a44c35cf67912e97f0430da3051075308ef6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling chars_counter v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `Command { std: "docker" "inspect" "6f5647e9cb6feb03b4d83326c85a44c35cf67912e97f0430da3051075308ef6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5647e9cb6feb03b4d83326c85a44c35cf67912e97f0430da3051075308ef6e", kill_on_drop: false }`
[INFO] [stdout] 6f5647e9cb6feb03b4d83326c85a44c35cf67912e97f0430da3051075308ef6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9df7947bf2aa5d7ff01606112f3df5ad370a3e6bcfb1760d52cf0d76b95878e3
[INFO] running `Command { std: "docker" "start" "-a" "9df7947bf2aa5d7ff01606112f3df5ad370a3e6bcfb1760d52cf0d76b95878e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling chars_counter v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "9df7947bf2aa5d7ff01606112f3df5ad370a3e6bcfb1760d52cf0d76b95878e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9df7947bf2aa5d7ff01606112f3df5ad370a3e6bcfb1760d52cf0d76b95878e3", kill_on_drop: false }`
[INFO] [stdout] 9df7947bf2aa5d7ff01606112f3df5ad370a3e6bcfb1760d52cf0d76b95878e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 37d62bde8a7cd233f9f216cfecb1b82c0152d0477451005db89be462ed031a2e
[INFO] running `Command { std: "docker" "start" "-a" "37d62bde8a7cd233f9f216cfecb1b82c0152d0477451005db89be462ed031a2e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chars_counter-75d09f34bce5f69c)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::find_by_char_test ... ok
[INFO] [stdout] test tests::find_by_num_test ... ok
[INFO] [stdout] test tests::least_chars_test ... ok
[INFO] [stdout] test tests::most_chars_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chars_counter
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.49s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "37d62bde8a7cd233f9f216cfecb1b82c0152d0477451005db89be462ed031a2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37d62bde8a7cd233f9f216cfecb1b82c0152d0477451005db89be462ed031a2e", kill_on_drop: false }`
[INFO] [stdout] 37d62bde8a7cd233f9f216cfecb1b82c0152d0477451005db89be462ed031a2e