[INFO] updating cached repository mknapik/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mknapik/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mknapik/rust-playground" "work/ex/beta-1.37-6/sources/1.36.0/gh/mknapik/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/mknapik/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mknapik/rust-playground" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mknapik/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mknapik/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e4c6319a55669fe5be6eeda162817f354f53764e
[INFO] sha for GitHub repo mknapik/rust-playground: e4c6319a55669fe5be6eeda162817f354f53764e
[INFO] validating manifest of mknapik/rust-playground on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mknapik/rust-playground on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mknapik/rust-playground
[INFO] finished frobbing mknapik/rust-playground
[INFO] frobbed toml for mknapik/rust-playground written to work/ex/beta-1.37-6/sources/1.36.0/gh/mknapik/rust-playground/Cargo.toml
[INFO] started frobbing mknapik/rust-playground
[INFO] finished frobbing mknapik/rust-playground
[INFO] frobbed toml for mknapik/rust-playground written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/mknapik/rust-playground/Cargo.toml
[INFO] crate mknapik/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing mknapik/rust-playground against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/mknapik/rust-playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 0f527a8d4768ef33d764a1f495723ccbaf2502c78aa7ed0e48ac028e5a0e27c0
[INFO] running `"docker" "start" "-a" "0f527a8d4768ef33d764a1f495723ccbaf2502c78aa7ed0e48ac028e5a0e27c0"`
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `"docker" "inspect" "0f527a8d4768ef33d764a1f495723ccbaf2502c78aa7ed0e48ac028e5a0e27c0"`
[INFO] running `"docker" "rm" "-f" "0f527a8d4768ef33d764a1f495723ccbaf2502c78aa7ed0e48ac028e5a0e27c0"`
[INFO] [stdout] 0f527a8d4768ef33d764a1f495723ccbaf2502c78aa7ed0e48ac028e5a0e27c0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/mknapik/rust-playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f5b795958c20d88c691a176813751fcdedb5c73ee6b93258d36e061078f432e4
[INFO] running `"docker" "start" "-a" "f5b795958c20d88c691a176813751fcdedb5c73ee6b93258d36e061078f432e4"`
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "f5b795958c20d88c691a176813751fcdedb5c73ee6b93258d36e061078f432e4"`
[INFO] running `"docker" "rm" "-f" "f5b795958c20d88c691a176813751fcdedb5c73ee6b93258d36e061078f432e4"`
[INFO] [stdout] f5b795958c20d88c691a176813751fcdedb5c73ee6b93258d36e061078f432e4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/mknapik/rust-playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] f0bea3cf5cb1f7c3feb810599b74143998d39b62f3b93da37c83daaabd3fdbc2
[INFO] running `"docker" "start" "-a" "f0bea3cf5cb1f7c3feb810599b74143998d39b62f3b93da37c83daaabd3fdbc2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/playground-f120c4715c6f4e1d
[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" "f0bea3cf5cb1f7c3feb810599b74143998d39b62f3b93da37c83daaabd3fdbc2"`
[INFO] running `"docker" "rm" "-f" "f0bea3cf5cb1f7c3feb810599b74143998d39b62f3b93da37c83daaabd3fdbc2"`
[INFO] [stdout] f0bea3cf5cb1f7c3feb810599b74143998d39b62f3b93da37c83daaabd3fdbc2