[INFO] updating cached repository edbaskerville/cargo-ubuild
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/edbaskerville/cargo-ubuild
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/edbaskerville/cargo-ubuild" "work/ex/beta-1.37-6/sources/1.36.0/gh/edbaskerville/cargo-ubuild"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/edbaskerville/cargo-ubuild'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/edbaskerville/cargo-ubuild" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/edbaskerville/cargo-ubuild"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/edbaskerville/cargo-ubuild'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d9169cf6290fcf523a59603491e7ce0745501fb
[INFO] sha for GitHub repo edbaskerville/cargo-ubuild: 9d9169cf6290fcf523a59603491e7ce0745501fb
[INFO] validating manifest of edbaskerville/cargo-ubuild 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 edbaskerville/cargo-ubuild 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 edbaskerville/cargo-ubuild
[INFO] finished frobbing edbaskerville/cargo-ubuild
[INFO] frobbed toml for edbaskerville/cargo-ubuild written to work/ex/beta-1.37-6/sources/1.36.0/gh/edbaskerville/cargo-ubuild/Cargo.toml
[INFO] started frobbing edbaskerville/cargo-ubuild
[INFO] finished frobbing edbaskerville/cargo-ubuild
[INFO] frobbed toml for edbaskerville/cargo-ubuild written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/edbaskerville/cargo-ubuild/Cargo.toml
[INFO] crate edbaskerville/cargo-ubuild 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 edbaskerville/cargo-ubuild 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/edbaskerville/cargo-ubuild:/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] 9ddc24eee80e4d6fa3bcfe2556d219fbbb4a7b00f77d5b6b0eae8f49879f7972
[INFO] running `"docker" "start" "-a" "9ddc24eee80e4d6fa3bcfe2556d219fbbb4a7b00f77d5b6b0eae8f49879f7972"`
[INFO] [stderr]    Compiling utf8parse v0.1.0
[INFO] [stderr]    Compiling vte v0.3.2
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling cargo-ubuild v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Write`, `self`
[INFO] [stderr]  --> src/main.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, Write, BufRead, BufReader};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:21
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 let mut reader = BufReader::new(stderr);
[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 2.80s
[INFO] running `"docker" "inspect" "9ddc24eee80e4d6fa3bcfe2556d219fbbb4a7b00f77d5b6b0eae8f49879f7972"`
[INFO] running `"docker" "rm" "-f" "9ddc24eee80e4d6fa3bcfe2556d219fbbb4a7b00f77d5b6b0eae8f49879f7972"`
[INFO] [stdout] 9ddc24eee80e4d6fa3bcfe2556d219fbbb4a7b00f77d5b6b0eae8f49879f7972
[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/edbaskerville/cargo-ubuild:/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] 660a69d5597fcb064e92b5f42f7342188522993f7a535f15cbd8926e47a3a24d
[INFO] running `"docker" "start" "-a" "660a69d5597fcb064e92b5f42f7342188522993f7a535f15cbd8926e47a3a24d"`
[INFO] [stderr]    Compiling cargo-ubuild v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Write`, `self`
[INFO] [stderr]  --> src/main.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{self, Write, BufRead, BufReader};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:21
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 let mut reader = BufReader::new(stderr);
[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 0.50s
[INFO] running `"docker" "inspect" "660a69d5597fcb064e92b5f42f7342188522993f7a535f15cbd8926e47a3a24d"`
[INFO] running `"docker" "rm" "-f" "660a69d5597fcb064e92b5f42f7342188522993f7a535f15cbd8926e47a3a24d"`
[INFO] [stdout] 660a69d5597fcb064e92b5f42f7342188522993f7a535f15cbd8926e47a3a24d
[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/edbaskerville/cargo-ubuild:/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] 52eb06e92a2c6628463598759149434491d434adb38bf8fdd3241a296be007b9
[INFO] running `"docker" "start" "-a" "52eb06e92a2c6628463598759149434491d434adb38bf8fdd3241a296be007b9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_ubuild-aeb0a6d2b35a48af
[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" "52eb06e92a2c6628463598759149434491d434adb38bf8fdd3241a296be007b9"`
[INFO] running `"docker" "rm" "-f" "52eb06e92a2c6628463598759149434491d434adb38bf8fdd3241a296be007b9"`
[INFO] [stdout] 52eb06e92a2c6628463598759149434491d434adb38bf8fdd3241a296be007b9