[INFO] updating cached repository archer884/swapcalc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/archer884/swapcalc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/archer884/swapcalc" "work/ex/beta-1.37-6/sources/1.36.0/gh/archer884/swapcalc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/archer884/swapcalc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/archer884/swapcalc" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/archer884/swapcalc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/archer884/swapcalc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3336f0ab7f02416d220b6ed62aef38dff684d1ba
[INFO] sha for GitHub repo archer884/swapcalc: 3336f0ab7f02416d220b6ed62aef38dff684d1ba
[INFO] validating manifest of archer884/swapcalc 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 archer884/swapcalc 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 archer884/swapcalc
[INFO] finished frobbing archer884/swapcalc
[INFO] frobbed toml for archer884/swapcalc written to work/ex/beta-1.37-6/sources/1.36.0/gh/archer884/swapcalc/Cargo.toml
[INFO] started frobbing archer884/swapcalc
[INFO] finished frobbing archer884/swapcalc
[INFO] frobbed toml for archer884/swapcalc written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/archer884/swapcalc/Cargo.toml
[INFO] crate archer884/swapcalc 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 archer884/swapcalc 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/archer884/swapcalc:/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] 53cc116e3a00640308edb7009e79ffd3a35ed5968d00402712dc13863a69b4d3
[INFO] running `"docker" "start" "-a" "53cc116e3a00640308edb7009e79ffd3a35ed5968d00402712dc13863a69b4d3"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling swapcalc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |         if let Some(cause) = self.cause() {
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "53cc116e3a00640308edb7009e79ffd3a35ed5968d00402712dc13863a69b4d3"`
[INFO] running `"docker" "rm" "-f" "53cc116e3a00640308edb7009e79ffd3a35ed5968d00402712dc13863a69b4d3"`
[INFO] [stdout] 53cc116e3a00640308edb7009e79ffd3a35ed5968d00402712dc13863a69b4d3
[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/archer884/swapcalc:/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] 2124175d11144003e56b79fe1dec72dd5a1c0b55a1e637355a60230c2cc5bd04
[INFO] running `"docker" "start" "-a" "2124175d11144003e56b79fe1dec72dd5a1c0b55a1e637355a60230c2cc5bd04"`
[INFO] [stderr]    Compiling swapcalc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |         if let Some(cause) = self.cause() {
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "2124175d11144003e56b79fe1dec72dd5a1c0b55a1e637355a60230c2cc5bd04"`
[INFO] running `"docker" "rm" "-f" "2124175d11144003e56b79fe1dec72dd5a1c0b55a1e637355a60230c2cc5bd04"`
[INFO] [stdout] 2124175d11144003e56b79fe1dec72dd5a1c0b55a1e637355a60230c2cc5bd04
[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/archer884/swapcalc:/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] 8460cdcca7a5688007594c958893feae44d741783ca5e4ced04d9f0c73282c3a
[INFO] running `"docker" "start" "-a" "8460cdcca7a5688007594c958893feae44d741783ca5e4ced04d9f0c73282c3a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/swapcalc-4d4d18c1f0d047c4
[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" "8460cdcca7a5688007594c958893feae44d741783ca5e4ced04d9f0c73282c3a"`
[INFO] running `"docker" "rm" "-f" "8460cdcca7a5688007594c958893feae44d741783ca5e4ced04d9f0c73282c3a"`
[INFO] [stdout] 8460cdcca7a5688007594c958893feae44d741783ca5e4ced04d9f0c73282c3a