[INFO] updating cached repository BobKingstone/rust-pwd
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BobKingstone/rust-pwd
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BobKingstone/rust-pwd" "work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BobKingstone/rust-pwd" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BobKingstone/rust-pwd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BobKingstone/rust-pwd'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c70a1f03b8729d43970a224c7ac5fb4e1604b17f
[INFO] sha for GitHub repo BobKingstone/rust-pwd: c70a1f03b8729d43970a224c7ac5fb4e1604b17f
[INFO] validating manifest of BobKingstone/rust-pwd 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 BobKingstone/rust-pwd 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 BobKingstone/rust-pwd
[INFO] finished frobbing BobKingstone/rust-pwd
[INFO] frobbed toml for BobKingstone/rust-pwd written to work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd/Cargo.toml
[INFO] started frobbing BobKingstone/rust-pwd
[INFO] finished frobbing BobKingstone/rust-pwd
[INFO] frobbed toml for BobKingstone/rust-pwd written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/BobKingstone/rust-pwd/Cargo.toml
[INFO] crate BobKingstone/rust-pwd 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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] 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 BobKingstone/rust-pwd 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd:/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] c00e33fd126b243521160d2165735250f3bcfd566bf0c61f3c9579a2afbdb371
[INFO] running `"docker" "start" "-a" "c00e33fd126b243521160d2165735250f3bcfd566bf0c61f3c9579a2afbdb371"`
[INFO] [stderr]    Compiling pwd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `selection` is never read
[INFO] [stderr]    --> src/main.rs:155:18
[INFO] [stderr]     |
[INFO] [stderr] 155 |             _ => selection = "".to_string(),
[INFO] [stderr]     |                  ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut split: Vec<&str> = file_contents.split(":").collect();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "c00e33fd126b243521160d2165735250f3bcfd566bf0c61f3c9579a2afbdb371"`
[INFO] running `"docker" "rm" "-f" "c00e33fd126b243521160d2165735250f3bcfd566bf0c61f3c9579a2afbdb371"`
[INFO] [stdout] c00e33fd126b243521160d2165735250f3bcfd566bf0c61f3c9579a2afbdb371
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd:/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] c264243774aebad9a6a34e5262167b81149770cd3ab5dba18dbb27adad1c09e6
[INFO] running `"docker" "start" "-a" "c264243774aebad9a6a34e5262167b81149770cd3ab5dba18dbb27adad1c09e6"`
[INFO] [stderr]    Compiling pwd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `selection` is never read
[INFO] [stderr]    --> src/main.rs:155:18
[INFO] [stderr]     |
[INFO] [stderr] 155 |             _ => selection = "".to_string(),
[INFO] [stderr]     |                  ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let mut split: Vec<&str> = file_contents.split(":").collect();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "c264243774aebad9a6a34e5262167b81149770cd3ab5dba18dbb27adad1c09e6"`
[INFO] running `"docker" "rm" "-f" "c264243774aebad9a6a34e5262167b81149770cd3ab5dba18dbb27adad1c09e6"`
[INFO] [stdout] c264243774aebad9a6a34e5262167b81149770cd3ab5dba18dbb27adad1c09e6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/BobKingstone/rust-pwd:/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] fa86174196ee1d5caca06cef7b47998247bc408763a56a6ee418399960793731
[INFO] running `"docker" "start" "-a" "fa86174196ee1d5caca06cef7b47998247bc408763a56a6ee418399960793731"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pwd-e6e89f5beb8dba1f
[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" "fa86174196ee1d5caca06cef7b47998247bc408763a56a6ee418399960793731"`
[INFO] running `"docker" "rm" "-f" "fa86174196ee1d5caca06cef7b47998247bc408763a56a6ee418399960793731"`
[INFO] [stdout] fa86174196ee1d5caca06cef7b47998247bc408763a56a6ee418399960793731