[INFO] updating cached repository dtoebe/wc-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dtoebe/wc-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dtoebe/wc-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/dtoebe/wc-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/dtoebe/wc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dtoebe/wc-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dtoebe/wc-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dtoebe/wc-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 05f53c29c731bbd6cccecf5ebb7f7599fa7f8317
[INFO] sha for GitHub repo dtoebe/wc-rs: 05f53c29c731bbd6cccecf5ebb7f7599fa7f8317
[INFO] validating manifest of dtoebe/wc-rs 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 dtoebe/wc-rs 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 dtoebe/wc-rs
[INFO] finished frobbing dtoebe/wc-rs
[INFO] frobbed toml for dtoebe/wc-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/dtoebe/wc-rs/Cargo.toml
[INFO] started frobbing dtoebe/wc-rs
[INFO] finished frobbing dtoebe/wc-rs
[INFO] frobbed toml for dtoebe/wc-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dtoebe/wc-rs/Cargo.toml
[INFO] crate dtoebe/wc-rs 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 dtoebe/wc-rs 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-5/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/dtoebe/wc-rs:/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] 59887bb12aacc7b59fc4d2bb2a25ac872826ff7f6b2c20dbb003e71aa9428da7
[INFO] running `"docker" "start" "-a" "59887bb12aacc7b59fc4d2bb2a25ac872826ff7f6b2c20dbb003e71aa9428da7"`
[INFO] [stderr]    Compiling wc-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:95:60
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn file_to_bytes(file_path: String) -> Result<Vec<u8>, Box<Error>> {
[INFO] [stderr]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `"docker" "inspect" "59887bb12aacc7b59fc4d2bb2a25ac872826ff7f6b2c20dbb003e71aa9428da7"`
[INFO] running `"docker" "rm" "-f" "59887bb12aacc7b59fc4d2bb2a25ac872826ff7f6b2c20dbb003e71aa9428da7"`
[INFO] [stdout] 59887bb12aacc7b59fc4d2bb2a25ac872826ff7f6b2c20dbb003e71aa9428da7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/dtoebe/wc-rs:/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] 4787c83da0a4c9c91d551310703891504736530dd00c1dff7c920e1d28f55f49
[INFO] running `"docker" "start" "-a" "4787c83da0a4c9c91d551310703891504736530dd00c1dff7c920e1d28f55f49"`
[INFO] [stderr]    Compiling wc-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:95:60
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn file_to_bytes(file_path: String) -> Result<Vec<u8>, Box<Error>> {
[INFO] [stderr]    |                                                            ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "4787c83da0a4c9c91d551310703891504736530dd00c1dff7c920e1d28f55f49"`
[INFO] running `"docker" "rm" "-f" "4787c83da0a4c9c91d551310703891504736530dd00c1dff7c920e1d28f55f49"`
[INFO] [stdout] 4787c83da0a4c9c91d551310703891504736530dd00c1dff7c920e1d28f55f49
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/dtoebe/wc-rs:/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] fda9cfffcb352964899915d9c05d5bbf1d6c67226e4c0415c8491e240f6c3536
[INFO] running `"docker" "start" "-a" "fda9cfffcb352964899915d9c05d5bbf1d6c67226e4c0415c8491e240f6c3536"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/wc_rs-b8c3e6c308dbeeec
[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" "fda9cfffcb352964899915d9c05d5bbf1d6c67226e4c0415c8491e240f6c3536"`
[INFO] running `"docker" "rm" "-f" "fda9cfffcb352964899915d9c05d5bbf1d6c67226e4c0415c8491e240f6c3536"`
[INFO] [stdout] fda9cfffcb352964899915d9c05d5bbf1d6c67226e4c0415c8491e240f6c3536