[INFO] updating cached repository gcouvrette/peek
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gcouvrette/peek
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gcouvrette/peek" "work/ex/beta-1.37-6/sources/1.36.0/gh/gcouvrette/peek"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/gcouvrette/peek'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gcouvrette/peek" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcouvrette/peek"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcouvrette/peek'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3836d3de885e395f5db923df9df683db24882f48
[INFO] sha for GitHub repo gcouvrette/peek: 3836d3de885e395f5db923df9df683db24882f48
[INFO] validating manifest of gcouvrette/peek on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gcouvrette/peek on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gcouvrette/peek
[INFO] finished frobbing gcouvrette/peek
[INFO] frobbed toml for gcouvrette/peek written to work/ex/beta-1.37-6/sources/1.36.0/gh/gcouvrette/peek/Cargo.toml
[INFO] started frobbing gcouvrette/peek
[INFO] finished frobbing gcouvrette/peek
[INFO] frobbed toml for gcouvrette/peek written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcouvrette/peek/Cargo.toml
[INFO] crate gcouvrette/peek already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing gcouvrette/peek against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcouvrette/peek:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] cc939b48c788ca80ba7610a87c4b6b077ffed26e40d5e9e6b14179ea78410efe
[INFO] running `"docker" "start" "-a" "cc939b48c788ca80ba7610a87c4b6b077ffed26e40d5e9e6b14179ea78410efe"`
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling getch v0.1.1
[INFO] [stderr]    Compiling peek v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_mode/read_mode.rs:21:48
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn get_read_mode(args: Args) -> Result<Box<ReadMode>, &'static str> {
[INFO] [stderr]    |                                                ^^^^^^^^ help: use `dyn`: `dyn ReadMode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read_mode/linear_mode.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         self.file.seek(SeekFrom::Start(self.index));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read_mode/linear_mode.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         self.file.read(buf.as_mut_slice());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read_mode/multiline_mode.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |             self.file.seek(SeekFrom::Start(seek_idx));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `"docker" "inspect" "cc939b48c788ca80ba7610a87c4b6b077ffed26e40d5e9e6b14179ea78410efe"`
[INFO] running `"docker" "rm" "-f" "cc939b48c788ca80ba7610a87c4b6b077ffed26e40d5e9e6b14179ea78410efe"`
[INFO] [stdout] cc939b48c788ca80ba7610a87c4b6b077ffed26e40d5e9e6b14179ea78410efe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcouvrette/peek:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6e18d721fe4675d033bb18623467af5ae643d0c8c225475329939985e69a7bb9
[INFO] running `"docker" "start" "-a" "6e18d721fe4675d033bb18623467af5ae643d0c8c225475329939985e69a7bb9"`
[INFO] [stderr]    Compiling peek v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/read_mode/read_mode.rs:21:48
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn get_read_mode(args: Args) -> Result<Box<ReadMode>, &'static str> {
[INFO] [stderr]    |                                                ^^^^^^^^ help: use `dyn`: `dyn ReadMode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read_mode/linear_mode.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         self.file.seek(SeekFrom::Start(self.index));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read_mode/linear_mode.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |         self.file.read(buf.as_mut_slice());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read_mode/multiline_mode.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |             self.file.seek(SeekFrom::Start(seek_idx));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "6e18d721fe4675d033bb18623467af5ae643d0c8c225475329939985e69a7bb9"`
[INFO] running `"docker" "rm" "-f" "6e18d721fe4675d033bb18623467af5ae643d0c8c225475329939985e69a7bb9"`
[INFO] [stdout] 6e18d721fe4675d033bb18623467af5ae643d0c8c225475329939985e69a7bb9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/gcouvrette/peek:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 84846ad4e3cfb5d5bf2c7b25327b96390f1ce542d78812a9ed5d9a5476839bbc
[INFO] running `"docker" "start" "-a" "84846ad4e3cfb5d5bf2c7b25327b96390f1ce542d78812a9ed5d9a5476839bbc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/peek-c638f6bb6430800b
[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/peek-3318d9b5758aa215
[INFO] [stderr]    Doc-tests peek
[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" "84846ad4e3cfb5d5bf2c7b25327b96390f1ce542d78812a9ed5d9a5476839bbc"`
[INFO] running `"docker" "rm" "-f" "84846ad4e3cfb5d5bf2c7b25327b96390f1ce542d78812a9ed5d9a5476839bbc"`
[INFO] [stdout] 84846ad4e3cfb5d5bf2c7b25327b96390f1ce542d78812a9ed5d9a5476839bbc