[INFO] updating cached repository stezu/word-friends-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/stezu/word-friends-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/stezu/word-friends-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/stezu/word-friends-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/stezu/word-friends-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/stezu/word-friends-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/stezu/word-friends-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/stezu/word-friends-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 025767445897dd27687550f936d9c7bb0f50f5ac
[INFO] sha for GitHub repo stezu/word-friends-rust: 025767445897dd27687550f936d9c7bb0f50f5ac
[INFO] validating manifest of stezu/word-friends-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 stezu/word-friends-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 stezu/word-friends-rust
[INFO] finished frobbing stezu/word-friends-rust
[INFO] frobbed toml for stezu/word-friends-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/stezu/word-friends-rust/Cargo.toml
[INFO] started frobbing stezu/word-friends-rust
[INFO] finished frobbing stezu/word-friends-rust
[INFO] frobbed toml for stezu/word-friends-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/stezu/word-friends-rust/Cargo.toml
[INFO] crate stezu/word-friends-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 stezu/word-friends-rust 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/stezu/word-friends-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 9e21ba7428d6d43f7552ba9830d65a96ae5ac9d4b4ef6981b39f90179a3fa435
[INFO] running `"docker" "start" "-a" "9e21ba7428d6d43f7552ba9830d65a96ae5ac9d4b4ef6981b39f90179a3fa435"`
[INFO] [stderr]    Compiling word-friends-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:11:40
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn get_file_from_stdin() -> Result<Box<BufRead>, Error> {
[INFO] [stderr]    |                                        ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn get_file_from_filename(file_name: &str) -> Result<Box<BufRead>, Error> {
[INFO] [stderr]    |                                                          ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:32:38
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn parse_args() -> Option<Result<Box<BufRead>, Error>> {
[INFO] [stderr]    |                                      ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:46:30
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn build_network(reader: Box<BufRead>) -> Network {
[INFO] [stderr]    |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `word`
[INFO] [stderr]  --> src/network.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   word: String,
[INFO] [stderr]   |   ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "9e21ba7428d6d43f7552ba9830d65a96ae5ac9d4b4ef6981b39f90179a3fa435"`
[INFO] running `"docker" "rm" "-f" "9e21ba7428d6d43f7552ba9830d65a96ae5ac9d4b4ef6981b39f90179a3fa435"`
[INFO] [stdout] 9e21ba7428d6d43f7552ba9830d65a96ae5ac9d4b4ef6981b39f90179a3fa435
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/stezu/word-friends-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ed527555483cb8b738ccde5dc7e4df638f0ff5b609e78a5f33cbabadf108b9e5
[INFO] running `"docker" "start" "-a" "ed527555483cb8b738ccde5dc7e4df638f0ff5b609e78a5f33cbabadf108b9e5"`
[INFO] [stderr]    Compiling word-friends-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:11:40
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn get_file_from_stdin() -> Result<Box<BufRead>, Error> {
[INFO] [stderr]    |                                        ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:15:58
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn get_file_from_filename(file_name: &str) -> Result<Box<BufRead>, Error> {
[INFO] [stderr]    |                                                          ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:32:38
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn parse_args() -> Option<Result<Box<BufRead>, Error>> {
[INFO] [stderr]    |                                      ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:46:30
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn build_network(reader: Box<BufRead>) -> Network {
[INFO] [stderr]    |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `word`
[INFO] [stderr]  --> src/network.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 5 |   word: String,
[INFO] [stderr]   |   ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "ed527555483cb8b738ccde5dc7e4df638f0ff5b609e78a5f33cbabadf108b9e5"`
[INFO] running `"docker" "rm" "-f" "ed527555483cb8b738ccde5dc7e4df638f0ff5b609e78a5f33cbabadf108b9e5"`
[INFO] [stdout] ed527555483cb8b738ccde5dc7e4df638f0ff5b609e78a5f33cbabadf108b9e5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/stezu/word-friends-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 3044f610c418590d59ce6a7b0762200dd49978d12f8ef2be19cf6669683f5eec
[INFO] running `"docker" "start" "-a" "3044f610c418590d59ce6a7b0762200dd49978d12f8ef2be19cf6669683f5eec"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/word_friends_rust-c2527ba07c9e31fa
[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" "3044f610c418590d59ce6a7b0762200dd49978d12f8ef2be19cf6669683f5eec"`
[INFO] running `"docker" "rm" "-f" "3044f610c418590d59ce6a7b0762200dd49978d12f8ef2be19cf6669683f5eec"`
[INFO] [stdout] 3044f610c418590d59ce6a7b0762200dd49978d12f8ef2be19cf6669683f5eec