[INFO] updating cached repository mraof/tcpgen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mraof/tcpgen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mraof/tcpgen" "work/ex/beta-1.38-1/sources/1.37.0/gh/mraof/tcpgen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mraof/tcpgen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mraof/tcpgen" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mraof/tcpgen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mraof/tcpgen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eb7a64009cadc0025b089f3eff71fba3b037836b
[INFO] sha for GitHub repo mraof/tcpgen: eb7a64009cadc0025b089f3eff71fba3b037836b
[INFO] validating manifest of mraof/tcpgen 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 mraof/tcpgen 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 mraof/tcpgen
[INFO] finished frobbing mraof/tcpgen
[INFO] frobbed toml for mraof/tcpgen written to work/ex/beta-1.38-1/sources/1.37.0/gh/mraof/tcpgen/Cargo.toml
[INFO] started frobbing mraof/tcpgen
[INFO] finished frobbing mraof/tcpgen
[INFO] frobbed toml for mraof/tcpgen written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mraof/tcpgen/Cargo.toml
[INFO] crate mraof/tcpgen 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] 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 mraof/tcpgen against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mraof/tcpgen:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 6a5769d982d0e451a62c56a015f602f88503306c1a79112875ba7a3709fbdd4b
[INFO] running `"docker" "start" "-a" "6a5769d982d0e451a62c56a015f602f88503306c1a79112875ba7a3709fbdd4b"`
[INFO] [stderr]    Compiling same-file v1.0.3
[INFO] [stderr]    Compiling walkdir v2.2.5
[INFO] [stderr]    Compiling tcpgen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `write`
[INFO] [stderr]  --> src/lib.rs:9:21
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs::{File, write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.66s
[INFO] running `"docker" "inspect" "6a5769d982d0e451a62c56a015f602f88503306c1a79112875ba7a3709fbdd4b"`
[INFO] running `"docker" "rm" "-f" "6a5769d982d0e451a62c56a015f602f88503306c1a79112875ba7a3709fbdd4b"`
[INFO] [stdout] 6a5769d982d0e451a62c56a015f602f88503306c1a79112875ba7a3709fbdd4b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mraof/tcpgen:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d608a9c36a82f85ab4d1702f9a6f5df0186368828acba0434b558cd3197cc582
[INFO] running `"docker" "start" "-a" "d608a9c36a82f85ab4d1702f9a6f5df0186368828acba0434b558cd3197cc582"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling tcpgen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `write`
[INFO] [stderr]  --> src/lib.rs:9:21
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs::{File, write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `"docker" "inspect" "d608a9c36a82f85ab4d1702f9a6f5df0186368828acba0434b558cd3197cc582"`
[INFO] running `"docker" "rm" "-f" "d608a9c36a82f85ab4d1702f9a6f5df0186368828acba0434b558cd3197cc582"`
[INFO] [stdout] d608a9c36a82f85ab4d1702f9a6f5df0186368828acba0434b558cd3197cc582
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mraof/tcpgen:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 31d08a92e7348c923415b8904a0c2980a086c0710a512090339d67160548e7d1
[INFO] running `"docker" "start" "-a" "31d08a92e7348c923415b8904a0c2980a086c0710a512090339d67160548e7d1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tcpgen-b59546b43d35dfe3
[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] [stderr]      Running /opt/crater/target/debug/deps/tcpgen-8e8c32574ca336d7
[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] [stderr]    Doc-tests tcpgen
[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" "31d08a92e7348c923415b8904a0c2980a086c0710a512090339d67160548e7d1"`
[INFO] running `"docker" "rm" "-f" "31d08a92e7348c923415b8904a0c2980a086c0710a512090339d67160548e7d1"`
[INFO] [stdout] 31d08a92e7348c923415b8904a0c2980a086c0710a512090339d67160548e7d1