[INFO] updating cached repository manfredlotz/learning_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/manfredlotz/learning_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/manfredlotz/learning_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/manfredlotz/learning_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/learning_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/learning_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6191974f3292705c81a8cdd167ce786ce29007b7
[INFO] sha for GitHub repo manfredlotz/learning_rust: 6191974f3292705c81a8cdd167ce786ce29007b7
[INFO] validating manifest of manfredlotz/learning_rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of manfredlotz/learning_rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing manfredlotz/learning_rust
[INFO] finished frobbing manfredlotz/learning_rust
[INFO] frobbed toml for manfredlotz/learning_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/manfredlotz/learning_rust/Cargo.toml
[INFO] started frobbing manfredlotz/learning_rust
[INFO] finished frobbing manfredlotz/learning_rust
[INFO] frobbed toml for manfredlotz/learning_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/learning_rust/Cargo.toml
[INFO] crate manfredlotz/learning_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing manfredlotz/learning_rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/learning_rust:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e4313c059e03d2528cf3e3ebc666085f49a8df1917a137dc7f4851fd7bbd78b9
[INFO] running `"docker" "start" "-a" "e4313c059e03d2528cf3e3ebc666085f49a8df1917a137dc7f4851fd7bbd78b9"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "e4313c059e03d2528cf3e3ebc666085f49a8df1917a137dc7f4851fd7bbd78b9"`
[INFO] running `"docker" "rm" "-f" "e4313c059e03d2528cf3e3ebc666085f49a8df1917a137dc7f4851fd7bbd78b9"`
[INFO] [stdout] e4313c059e03d2528cf3e3ebc666085f49a8df1917a137dc7f4851fd7bbd78b9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/learning_rust:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4a6a4bbf26dc00d34d8616086d5b0de4ba4397ad801569a7726db5a87d26127d
[INFO] running `"docker" "start" "-a" "4a6a4bbf26dc00d34d8616086d5b0de4ba4397ad801569a7726db5a87d26127d"`
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "4a6a4bbf26dc00d34d8616086d5b0de4ba4397ad801569a7726db5a87d26127d"`
[INFO] running `"docker" "rm" "-f" "4a6a4bbf26dc00d34d8616086d5b0de4ba4397ad801569a7726db5a87d26127d"`
[INFO] [stdout] 4a6a4bbf26dc00d34d8616086d5b0de4ba4397ad801569a7726db5a87d26127d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/manfredlotz/learning_rust:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 21560d431484f926fdd432738aff14d23e4be0c76d98af3350a5464368266d37
[INFO] running `"docker" "start" "-a" "21560d431484f926fdd432738aff14d23e4be0c76d98af3350a5464368266d37"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learning_rust-8a143b6146b14f8d
[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" "21560d431484f926fdd432738aff14d23e4be0c76d98af3350a5464368266d37"`
[INFO] running `"docker" "rm" "-f" "21560d431484f926fdd432738aff14d23e4be0c76d98af3350a5464368266d37"`
[INFO] [stdout] 21560d431484f926fdd432738aff14d23e4be0c76d98af3350a5464368266d37