[INFO] crate rs-docker 0.0.51 is already in cache
[INFO] extracting crate rs-docker 0.0.51 into work/ex/beta-1.38-1/sources/1.37.0/reg/rs-docker/0.0.51
[INFO] extracting crate rs-docker 0.0.51 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rs-docker/0.0.51
[INFO] validating manifest of rs-docker-0.0.51 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 rs-docker-0.0.51 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 rs-docker-0.0.51
[INFO] finished frobbing rs-docker-0.0.51
[INFO] frobbed toml for rs-docker-0.0.51 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rs-docker/0.0.51/Cargo.toml
[INFO] started frobbing rs-docker-0.0.51
[INFO] finished frobbing rs-docker-0.0.51
[INFO] frobbed toml for rs-docker-0.0.51 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rs-docker/0.0.51/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing rs-docker-0.0.51 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rs-docker/0.0.51:/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] 5057ca71840cdbf0d1f39e4f68bb595def5471cebfcb361117911aac9f576ebf
[INFO] running `"docker" "start" "-a" "5057ca71840cdbf0d1f39e4f68bb595def5471cebfcb361117911aac9f576ebf"`
[INFO] [stderr]    Compiling unix_socket v0.5.0
[INFO] [stderr]    Compiling rs-docker v0.0.51 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/docker.rs:408:21
[INFO] [stderr]     |
[INFO] [stderr] 408 |                 let mut stream = self.unix_stream.as_mut().unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/docker.rs:412:21
[INFO] [stderr]     |
[INFO] [stderr] 412 |                 let mut stream = self.tcp_stream.as_mut().unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.58s
[INFO] running `"docker" "inspect" "5057ca71840cdbf0d1f39e4f68bb595def5471cebfcb361117911aac9f576ebf"`
[INFO] running `"docker" "rm" "-f" "5057ca71840cdbf0d1f39e4f68bb595def5471cebfcb361117911aac9f576ebf"`
[INFO] [stdout] 5057ca71840cdbf0d1f39e4f68bb595def5471cebfcb361117911aac9f576ebf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rs-docker/0.0.51:/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] 1b935829f7ab48c495124bcb87df3cc05434c3b123c4c600d0edb08f3b55de9c
[INFO] running `"docker" "start" "-a" "1b935829f7ab48c495124bcb87df3cc05434c3b123c4c600d0edb08f3b55de9c"`
[INFO] [stderr]    Compiling rs-docker v0.0.51 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/docker.rs:408:21
[INFO] [stderr]     |
[INFO] [stderr] 408 |                 let mut stream = self.unix_stream.as_mut().unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/docker.rs:412:21
[INFO] [stderr]     |
[INFO] [stderr] 412 |                 let mut stream = self.tcp_stream.as_mut().unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.73s
[INFO] running `"docker" "inspect" "1b935829f7ab48c495124bcb87df3cc05434c3b123c4c600d0edb08f3b55de9c"`
[INFO] running `"docker" "rm" "-f" "1b935829f7ab48c495124bcb87df3cc05434c3b123c4c600d0edb08f3b55de9c"`
[INFO] [stdout] 1b935829f7ab48c495124bcb87df3cc05434c3b123c4c600d0edb08f3b55de9c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/rs-docker/0.0.51:/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] f6c15c592a6879b83674b02e1d37f43d4402065772a23ca86076400a8952f962
[INFO] running `"docker" "start" "-a" "f6c15c592a6879b83674b02e1d37f43d4402065772a23ca86076400a8952f962"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rs_docker-c754db26dede7132
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test::create_proper_http_request ... ok
[INFO] [stdout] test test::get_container_info ... ok
[INFO] [stdout] test test::get_system_info ... ok
[INFO] [stdout] test test::get_stats ... ok
[INFO] [stdout] test test::get_processes ... ok
[INFO] [stdout] test test::get_images ... ok
[INFO] [stdout] test test::get_filesystem_changes ... ok
[INFO] [stdout] test test::get_networks ... ok
[INFO] [stdout] test test::get_containers ... ok
[INFO] [stdout] test test::get_version ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rs-docker
[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" "f6c15c592a6879b83674b02e1d37f43d4402065772a23ca86076400a8952f962"`
[INFO] running `"docker" "rm" "-f" "f6c15c592a6879b83674b02e1d37f43d4402065772a23ca86076400a8952f962"`
[INFO] [stdout] f6c15c592a6879b83674b02e1d37f43d4402065772a23ca86076400a8952f962