[INFO] updating cached repository jaemk/rv
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jaemk/rv
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jaemk/rv" "work/ex/beta-1.37-6/sources/1.36.0/gh/jaemk/rv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jaemk/rv'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jaemk/rv" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jaemk/rv"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jaemk/rv'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4bde319541b5b5f71edd0bf40b04b4a65cae09c0
[INFO] sha for GitHub repo jaemk/rv: 4bde319541b5b5f71edd0bf40b04b4a65cae09c0
[INFO] validating manifest of jaemk/rv 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 jaemk/rv 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 jaemk/rv
[INFO] finished frobbing jaemk/rv
[INFO] frobbed toml for jaemk/rv written to work/ex/beta-1.37-6/sources/1.36.0/gh/jaemk/rv/Cargo.toml
[INFO] started frobbing jaemk/rv
[INFO] finished frobbing jaemk/rv
[INFO] frobbed toml for jaemk/rv written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jaemk/rv/Cargo.toml
[INFO] crate jaemk/rv 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 jaemk/rv 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-4/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/jaemk/rv:/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] 854c4871f71639e10d878bf41c1ca980f36d4f5f6bd446c72aeedebd637a3495
[INFO] running `"docker" "start" "-a" "854c4871f71639e10d878bf41c1ca980f36d4f5f6bd446c72aeedebd637a3495"`
[INFO] [stderr]    Compiling rv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/main.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 5  | use std::io::{self, BufRead, BufReader, BufWriter, Write};
[INFO] [stderr]    |                                                    ----- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 64 |         use ::std::io::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:100:30
[INFO] [stderr]     |
[INFO] [stderr] 100 |         let mut buf_rdr: Box<BufRead> = if let Some(f) = file_name {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.77s
[INFO] running `"docker" "inspect" "854c4871f71639e10d878bf41c1ca980f36d4f5f6bd446c72aeedebd637a3495"`
[INFO] running `"docker" "rm" "-f" "854c4871f71639e10d878bf41c1ca980f36d4f5f6bd446c72aeedebd637a3495"`
[INFO] [stdout] 854c4871f71639e10d878bf41c1ca980f36d4f5f6bd446c72aeedebd637a3495
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/jaemk/rv:/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] 581e7a504470fcf1dafe2331c960bdccce89d1992fac4824088e0e57e946ebb4
[INFO] running `"docker" "start" "-a" "581e7a504470fcf1dafe2331c960bdccce89d1992fac4824088e0e57e946ebb4"`
[INFO] [stderr]    Compiling rv v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/main.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 5  | use std::io::{self, BufRead, BufReader, BufWriter, Write};
[INFO] [stderr]    |                                                    ----- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 64 |         use ::std::io::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:100:30
[INFO] [stderr]     |
[INFO] [stderr] 100 |         let mut buf_rdr: Box<BufRead> = if let Some(f) = file_name {
[INFO] [stderr]     |                              ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "581e7a504470fcf1dafe2331c960bdccce89d1992fac4824088e0e57e946ebb4"`
[INFO] running `"docker" "rm" "-f" "581e7a504470fcf1dafe2331c960bdccce89d1992fac4824088e0e57e946ebb4"`
[INFO] [stdout] 581e7a504470fcf1dafe2331c960bdccce89d1992fac4824088e0e57e946ebb4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/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/jaemk/rv:/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] e2ac2985896058102424ceec98a96b208c59fda678f2f7df970dcfdb75eeff1c
[INFO] running `"docker" "start" "-a" "e2ac2985896058102424ceec98a96b208c59fda678f2f7df970dcfdb75eeff1c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rv-e9bcc4a3d5a7d07f
[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" "e2ac2985896058102424ceec98a96b208c59fda678f2f7df970dcfdb75eeff1c"`
[INFO] running `"docker" "rm" "-f" "e2ac2985896058102424ceec98a96b208c59fda678f2f7df970dcfdb75eeff1c"`
[INFO] [stdout] e2ac2985896058102424ceec98a96b208c59fda678f2f7df970dcfdb75eeff1c