[INFO] updating cached repository morgenm/joe-bbm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/morgenm/joe-bbm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/morgenm/joe-bbm" "work/ex/beta-1.38-1/sources/1.37.0/gh/morgenm/joe-bbm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/morgenm/joe-bbm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/morgenm/joe-bbm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/morgenm/joe-bbm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/morgenm/joe-bbm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 00db4795d1ace7cc638bebb1646043635630b60e
[INFO] sha for GitHub repo morgenm/joe-bbm: 00db4795d1ace7cc638bebb1646043635630b60e
[INFO] validating manifest of morgenm/joe-bbm 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 morgenm/joe-bbm 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 morgenm/joe-bbm
[INFO] finished frobbing morgenm/joe-bbm
[INFO] frobbed toml for morgenm/joe-bbm written to work/ex/beta-1.38-1/sources/1.37.0/gh/morgenm/joe-bbm/Cargo.toml
[INFO] started frobbing morgenm/joe-bbm
[INFO] finished frobbing morgenm/joe-bbm
[INFO] frobbed toml for morgenm/joe-bbm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/morgenm/joe-bbm/Cargo.toml
[INFO] crate morgenm/joe-bbm 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing morgenm/joe-bbm 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/morgenm/joe-bbm:/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] 80db0e052d7174c8a397ea2824657abf4a18074d4ff6c779e7594f5f9054357f
[INFO] running `"docker" "start" "-a" "80db0e052d7174c8a397ea2824657abf4a18074d4ff6c779e7594f5f9054357f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling args v2.2.0
[INFO] [stderr]    Compiling dirs-sys v0.3.3
[INFO] [stderr]    Compiling dirs v2.0.1
[INFO] [stderr]    Compiling joe-bbm v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         Err(e) => String::from("~")
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.20s
[INFO] running `"docker" "inspect" "80db0e052d7174c8a397ea2824657abf4a18074d4ff6c779e7594f5f9054357f"`
[INFO] running `"docker" "rm" "-f" "80db0e052d7174c8a397ea2824657abf4a18074d4ff6c779e7594f5f9054357f"`
[INFO] [stdout] 80db0e052d7174c8a397ea2824657abf4a18074d4ff6c779e7594f5f9054357f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/morgenm/joe-bbm:/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] 4ed6a5ba0087cf3af1d3a6a69fc8bb82a02e59d8b38e2c06a546f77eadd10781
[INFO] running `"docker" "start" "-a" "4ed6a5ba0087cf3af1d3a6a69fc8bb82a02e59d8b38e2c06a546f77eadd10781"`
[INFO] [stderr]    Compiling joe-bbm v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]    --> src/main.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         Err(e) => String::from("~")
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `"docker" "inspect" "4ed6a5ba0087cf3af1d3a6a69fc8bb82a02e59d8b38e2c06a546f77eadd10781"`
[INFO] running `"docker" "rm" "-f" "4ed6a5ba0087cf3af1d3a6a69fc8bb82a02e59d8b38e2c06a546f77eadd10781"`
[INFO] [stdout] 4ed6a5ba0087cf3af1d3a6a69fc8bb82a02e59d8b38e2c06a546f77eadd10781
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/morgenm/joe-bbm:/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] 2c24c06ebd998b6d0801d0a55e3b9d4196d42b8497fe3e04ba8bb889f1d690ff
[INFO] running `"docker" "start" "-a" "2c24c06ebd998b6d0801d0a55e3b9d4196d42b8497fe3e04ba8bb889f1d690ff"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/joe_bbm-ec95115da30c6ad6
[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" "2c24c06ebd998b6d0801d0a55e3b9d4196d42b8497fe3e04ba8bb889f1d690ff"`
[INFO] running `"docker" "rm" "-f" "2c24c06ebd998b6d0801d0a55e3b9d4196d42b8497fe3e04ba8bb889f1d690ff"`
[INFO] [stdout] 2c24c06ebd998b6d0801d0a55e3b9d4196d42b8497fe3e04ba8bb889f1d690ff