[INFO] updating cached repository BurntSushi/rust-error-handling-case-study
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/BurntSushi/rust-error-handling-case-study
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/BurntSushi/rust-error-handling-case-study" "work/ex/beta-1.37-6/sources/1.36.0/gh/BurntSushi/rust-error-handling-case-study"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/BurntSushi/rust-error-handling-case-study'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/BurntSushi/rust-error-handling-case-study" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/BurntSushi/rust-error-handling-case-study"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/BurntSushi/rust-error-handling-case-study'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8e2af66c6aa41387c578303253e6fac30b679d1d
[INFO] sha for GitHub repo BurntSushi/rust-error-handling-case-study: 8e2af66c6aa41387c578303253e6fac30b679d1d
[INFO] validating manifest of BurntSushi/rust-error-handling-case-study 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 BurntSushi/rust-error-handling-case-study 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 BurntSushi/rust-error-handling-case-study
[INFO] finished frobbing BurntSushi/rust-error-handling-case-study
[INFO] frobbed toml for BurntSushi/rust-error-handling-case-study written to work/ex/beta-1.37-6/sources/1.36.0/gh/BurntSushi/rust-error-handling-case-study/Cargo.toml
[INFO] started frobbing BurntSushi/rust-error-handling-case-study
[INFO] finished frobbing BurntSushi/rust-error-handling-case-study
[INFO] frobbed toml for BurntSushi/rust-error-handling-case-study written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/BurntSushi/rust-error-handling-case-study/Cargo.toml
[INFO] crate BurntSushi/rust-error-handling-case-study 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 BurntSushi/rust-error-handling-case-study 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/BurntSushi/rust-error-handling-case-study:/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] 0b72a43d3fa3eb510df973b179dbf4574541e67d4522e8f799dbc43765cebc55
[INFO] running `"docker" "start" "-a" "0b72a43d3fa3eb510df973b179dbf4574541e67d4522e8f799dbc43765cebc55"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling csv v0.14.7
[INFO] [stderr]    Compiling docopt v0.6.86
[INFO] [stderr]    Compiling city-pop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.33s
[INFO] running `"docker" "inspect" "0b72a43d3fa3eb510df973b179dbf4574541e67d4522e8f799dbc43765cebc55"`
[INFO] running `"docker" "rm" "-f" "0b72a43d3fa3eb510df973b179dbf4574541e67d4522e8f799dbc43765cebc55"`
[INFO] [stdout] 0b72a43d3fa3eb510df973b179dbf4574541e67d4522e8f799dbc43765cebc55
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/BurntSushi/rust-error-handling-case-study:/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] d35ddce13aefa7f76f11e676b5590854525492f2e127be4b33770aaa9c456b7f
[INFO] running `"docker" "start" "-a" "d35ddce13aefa7f76f11e676b5590854525492f2e127be4b33770aaa9c456b7f"`
[INFO] [stderr]    Compiling city-pop v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "d35ddce13aefa7f76f11e676b5590854525492f2e127be4b33770aaa9c456b7f"`
[INFO] running `"docker" "rm" "-f" "d35ddce13aefa7f76f11e676b5590854525492f2e127be4b33770aaa9c456b7f"`
[INFO] [stdout] d35ddce13aefa7f76f11e676b5590854525492f2e127be4b33770aaa9c456b7f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/BurntSushi/rust-error-handling-case-study:/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] b94b96046a924da2289d8125271182f23cbca68ef9b53e683166887289e8cf1a
[INFO] running `"docker" "start" "-a" "b94b96046a924da2289d8125271182f23cbca68ef9b53e683166887289e8cf1a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/city_pop-1b637c04ca20d4b3
[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" "b94b96046a924da2289d8125271182f23cbca68ef9b53e683166887289e8cf1a"`
[INFO] running `"docker" "rm" "-f" "b94b96046a924da2289d8125271182f23cbca68ef9b53e683166887289e8cf1a"`
[INFO] [stdout] b94b96046a924da2289d8125271182f23cbca68ef9b53e683166887289e8cf1a