[INFO] updating cached repository aaronschif/prompt
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/aaronschif/prompt
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/aaronschif/prompt" "work/ex/beta-1.37-6/sources/1.36.0/gh/aaronschif/prompt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/aaronschif/prompt'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/aaronschif/prompt" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/aaronschif/prompt"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/aaronschif/prompt'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f7b4a498074c0b76321b19f9e06f429df1f6517a
[INFO] sha for GitHub repo aaronschif/prompt: f7b4a498074c0b76321b19f9e06f429df1f6517a
[INFO] validating manifest of aaronschif/prompt 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 aaronschif/prompt 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 aaronschif/prompt
[INFO] finished frobbing aaronschif/prompt
[INFO] frobbed toml for aaronschif/prompt written to work/ex/beta-1.37-6/sources/1.36.0/gh/aaronschif/prompt/Cargo.toml
[INFO] started frobbing aaronschif/prompt
[INFO] finished frobbing aaronschif/prompt
[INFO] frobbed toml for aaronschif/prompt written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/aaronschif/prompt/Cargo.toml
[INFO] crate aaronschif/prompt 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 aaronschif/prompt against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/aaronschif/prompt:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 7e976855f6278f6deebe82f99b9fa0aa7e5202d8dacdcd9401c78078e696855c
[INFO] running `"docker" "start" "-a" "7e976855f6278f6deebe82f99b9fa0aa7e5202d8dacdcd9401c78078e696855c"`
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling curl-sys v0.4.13
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]    Compiling libgit2-sys v0.7.10
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling git2 v0.7.5
[INFO] [stderr]    Compiling prompt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `termion::color::Color`
[INFO] [stderr]  --> src/shells/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use termion::color::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/main.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 | use self::formatter::{Formatter};
[INFO] [stderr]    |                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/formatter.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn fg(mut self) -> Self {
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/formatter.rs:20:15
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn bg(mut self) -> Self {
[INFO] [stderr]    |               ----^^^^
[INFO] [stderr]    |               |
[INFO] [stderr]    |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/formatter.rs:24:18
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn reset(mut self) -> Self {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Formatter`
[INFO] [stderr]  --> src/formatter.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct Formatter {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]  --> src/formatter.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn to_string() -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/formatter.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn add(mut self, part: &str) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `fg`
[INFO] [stderr]   --> src/formatter.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn fg(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bg`
[INFO] [stderr]   --> src/formatter.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn bg(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]   --> src/formatter.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn reset(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/git/mod.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         repo.stash_foreach(|_, _, _| {stash_count += 1; true}).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shells/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         write!(f, "\033[31m{}{}\033[m", thing, thing2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shells/mod.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         write!(f, "%{{{}{}%}}", thing, thing2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shells/mod.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         write!(f, "{}{}", thing, thing2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 11s
[INFO] running `"docker" "inspect" "7e976855f6278f6deebe82f99b9fa0aa7e5202d8dacdcd9401c78078e696855c"`
[INFO] running `"docker" "rm" "-f" "7e976855f6278f6deebe82f99b9fa0aa7e5202d8dacdcd9401c78078e696855c"`
[INFO] [stdout] 7e976855f6278f6deebe82f99b9fa0aa7e5202d8dacdcd9401c78078e696855c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/aaronschif/prompt:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2e836ff27609ec8bd505daccfa62ad96ee158738233162803c1182f85e4d5489
[INFO] running `"docker" "start" "-a" "2e836ff27609ec8bd505daccfa62ad96ee158738233162803c1182f85e4d5489"`
[INFO] [stderr]    Compiling prompt v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `termion::color::Color`
[INFO] [stderr]  --> src/shells/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use termion::color::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Formatter`
[INFO] [stderr]   --> src/main.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 | use self::formatter::{Formatter};
[INFO] [stderr]    |                       ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/formatter.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn fg(mut self) -> Self {
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/formatter.rs:20:15
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn bg(mut self) -> Self {
[INFO] [stderr]    |               ----^^^^
[INFO] [stderr]    |               |
[INFO] [stderr]    |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/formatter.rs:24:18
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn reset(mut self) -> Self {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Formatter`
[INFO] [stderr]  --> src/formatter.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub struct Formatter {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]  --> src/formatter.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn to_string() -> String {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/formatter.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn add(mut self, part: &str) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `fg`
[INFO] [stderr]   --> src/formatter.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn fg(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bg`
[INFO] [stderr]   --> src/formatter.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn bg(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]   --> src/formatter.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn reset(mut self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_ok` that must be used
[INFO] [stderr]   --> src/git/mod.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |         repo.stash_foreach(|_, _, _| {stash_count += 1; true}).is_ok();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shells/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         write!(f, "\033[31m{}{}\033[m", thing, thing2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shells/mod.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         write!(f, "%{{{}{}%}}", thing, thing2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shells/mod.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |         write!(f, "{}{}", thing, thing2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "2e836ff27609ec8bd505daccfa62ad96ee158738233162803c1182f85e4d5489"`
[INFO] running `"docker" "rm" "-f" "2e836ff27609ec8bd505daccfa62ad96ee158738233162803c1182f85e4d5489"`
[INFO] [stdout] 2e836ff27609ec8bd505daccfa62ad96ee158738233162803c1182f85e4d5489
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/aaronschif/prompt:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] fd5527653068b5ec8a4c4ca777b6254aa3a9ac75e58b6e088a4db6bdb3f882d7
[INFO] running `"docker" "start" "-a" "fd5527653068b5ec8a4c4ca777b6254aa3a9ac75e58b6e088a4db6bdb3f882d7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/prompt-f3037f63d980b65f
[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" "fd5527653068b5ec8a4c4ca777b6254aa3a9ac75e58b6e088a4db6bdb3f882d7"`
[INFO] running `"docker" "rm" "-f" "fd5527653068b5ec8a4c4ca777b6254aa3a9ac75e58b6e088a4db6bdb3f882d7"`
[INFO] [stdout] fd5527653068b5ec8a4c4ca777b6254aa3a9ac75e58b6e088a4db6bdb3f882d7