[INFO] updating cached repository VentGrey/rust-practices-2
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/VentGrey/rust-practices-2
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/VentGrey/rust-practices-2" "work/ex/beta-1.38-1/sources/1.37.0/gh/VentGrey/rust-practices-2"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/VentGrey/rust-practices-2'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/VentGrey/rust-practices-2" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/VentGrey/rust-practices-2"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/VentGrey/rust-practices-2'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ae271b50448a15b4e5e86023cf317e274903429f
[INFO] sha for GitHub repo VentGrey/rust-practices-2: ae271b50448a15b4e5e86023cf317e274903429f
[INFO] validating manifest of VentGrey/rust-practices-2 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 VentGrey/rust-practices-2 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 VentGrey/rust-practices-2
[INFO] finished frobbing VentGrey/rust-practices-2
[INFO] frobbed toml for VentGrey/rust-practices-2 written to work/ex/beta-1.38-1/sources/1.37.0/gh/VentGrey/rust-practices-2/Cargo.toml
[INFO] started frobbing VentGrey/rust-practices-2
[INFO] finished frobbing VentGrey/rust-practices-2
[INFO] frobbed toml for VentGrey/rust-practices-2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/VentGrey/rust-practices-2/Cargo.toml
[INFO] crate VentGrey/rust-practices-2 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing VentGrey/rust-practices-2 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-3/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/VentGrey/rust-practices-2:/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] f0fb45adc6fb34c2c494e46e406b1c139b6cb849591cf98c3e39ff9d693815b3
[INFO] running `"docker" "start" "-a" "f0fb45adc6fb34c2c494e46e406b1c139b6cb849591cf98c3e39ff9d693815b3"`
[INFO] [stderr]    Compiling easy-rust-2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "f0fb45adc6fb34c2c494e46e406b1c139b6cb849591cf98c3e39ff9d693815b3"`
[INFO] running `"docker" "rm" "-f" "f0fb45adc6fb34c2c494e46e406b1c139b6cb849591cf98c3e39ff9d693815b3"`
[INFO] [stdout] f0fb45adc6fb34c2c494e46e406b1c139b6cb849591cf98c3e39ff9d693815b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/VentGrey/rust-practices-2:/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] 32d60a8fade85bf256144c10c5dd33201f7194cd5e2dca9183bc35300cba6d44
[INFO] running `"docker" "start" "-a" "32d60a8fade85bf256144c10c5dd33201f7194cd5e2dca9183bc35300cba6d44"`
[INFO] [stderr]    Compiling easy-rust-2 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "32d60a8fade85bf256144c10c5dd33201f7194cd5e2dca9183bc35300cba6d44"`
[INFO] running `"docker" "rm" "-f" "32d60a8fade85bf256144c10c5dd33201f7194cd5e2dca9183bc35300cba6d44"`
[INFO] [stdout] 32d60a8fade85bf256144c10c5dd33201f7194cd5e2dca9183bc35300cba6d44
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/VentGrey/rust-practices-2:/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] 6ab589cea2cc03ec2b99e0176fea6f4910ae33a8225e1d703f78a8dabdeb8e85
[INFO] running `"docker" "start" "-a" "6ab589cea2cc03ec2b99e0176fea6f4910ae33a8225e1d703f78a8dabdeb8e85"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/easy_rust_2-d304d68c1ebb83d0
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/main-193815a7aa99542f
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests easy-rust-2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [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" "6ab589cea2cc03ec2b99e0176fea6f4910ae33a8225e1d703f78a8dabdeb8e85"`
[INFO] running `"docker" "rm" "-f" "6ab589cea2cc03ec2b99e0176fea6f4910ae33a8225e1d703f78a8dabdeb8e85"`
[INFO] [stdout] 6ab589cea2cc03ec2b99e0176fea6f4910ae33a8225e1d703f78a8dabdeb8e85