[INFO] updating cached repository Dylan-DPC/cargo-caldera
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Dylan-DPC/cargo-caldera
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Dylan-DPC/cargo-caldera" "work/ex/beta-1.37-6/sources/1.36.0/gh/Dylan-DPC/cargo-caldera"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Dylan-DPC/cargo-caldera'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Dylan-DPC/cargo-caldera" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Dylan-DPC/cargo-caldera"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Dylan-DPC/cargo-caldera'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 271e492865081a1f33f9ead3e57d3ba6ca9edaf4
[INFO] sha for GitHub repo Dylan-DPC/cargo-caldera: 271e492865081a1f33f9ead3e57d3ba6ca9edaf4
[INFO] validating manifest of Dylan-DPC/cargo-caldera 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 Dylan-DPC/cargo-caldera 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 Dylan-DPC/cargo-caldera
[INFO] finished frobbing Dylan-DPC/cargo-caldera
[INFO] frobbed toml for Dylan-DPC/cargo-caldera written to work/ex/beta-1.37-6/sources/1.36.0/gh/Dylan-DPC/cargo-caldera/Cargo.toml
[INFO] started frobbing Dylan-DPC/cargo-caldera
[INFO] finished frobbing Dylan-DPC/cargo-caldera
[INFO] frobbed toml for Dylan-DPC/cargo-caldera written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Dylan-DPC/cargo-caldera/Cargo.toml
[INFO] crate Dylan-DPC/cargo-caldera 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 Dylan-DPC/cargo-caldera 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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Dylan-DPC/cargo-caldera:/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] 939d45f125584fa5d62b47f21b6be4b658853db7c7730459924ee6a345c9803d
[INFO] running `"docker" "start" "-a" "939d45f125584fa5d62b47f21b6be4b658853db7c7730459924ee6a345c9803d"`
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling structopt v0.2.14
[INFO] [stderr]    Compiling cargo-caldera v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `path::PathBuf`
[INFO] [stderr]  --> src/main.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{io::Write, path::PathBuf};
[INFO] [stderr]   |                      ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opt`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let opt = Cli::from_args();
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_opt`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/runner.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn version(path: &Path) -> Result<Version, Box<dyn Error>> {
[INFO] [stderr]    |                    ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.71s
[INFO] running `"docker" "inspect" "939d45f125584fa5d62b47f21b6be4b658853db7c7730459924ee6a345c9803d"`
[INFO] running `"docker" "rm" "-f" "939d45f125584fa5d62b47f21b6be4b658853db7c7730459924ee6a345c9803d"`
[INFO] [stdout] 939d45f125584fa5d62b47f21b6be4b658853db7c7730459924ee6a345c9803d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Dylan-DPC/cargo-caldera:/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] 1003319619aaa548e5a2afffb263fd7655b7021d334c0907257c0c777f7fe9b3
[INFO] running `"docker" "start" "-a" "1003319619aaa548e5a2afffb263fd7655b7021d334c0907257c0c777f7fe9b3"`
[INFO] [stderr]    Compiling cargo-caldera v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `path::PathBuf`
[INFO] [stderr]  --> src/main.rs:2:22
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::{io::Write, path::PathBuf};
[INFO] [stderr]   |                      ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opt`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let opt = Cli::from_args();
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_opt`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/runner.rs:38:20
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn version(path: &Path) -> Result<Version, Box<dyn Error>> {
[INFO] [stderr]    |                    ^^^^ help: consider prefixing with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "1003319619aaa548e5a2afffb263fd7655b7021d334c0907257c0c777f7fe9b3"`
[INFO] running `"docker" "rm" "-f" "1003319619aaa548e5a2afffb263fd7655b7021d334c0907257c0c777f7fe9b3"`
[INFO] [stdout] 1003319619aaa548e5a2afffb263fd7655b7021d334c0907257c0c777f7fe9b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Dylan-DPC/cargo-caldera:/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] f2616c58406ba35b2e0b94051c2e79f9908aa9da59f363129f2276ad62b46a06
[INFO] running `"docker" "start" "-a" "f2616c58406ba35b2e0b94051c2e79f9908aa9da59f363129f2276ad62b46a06"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_caldera-46e73ab513f72f07
[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" "f2616c58406ba35b2e0b94051c2e79f9908aa9da59f363129f2276ad62b46a06"`
[INFO] running `"docker" "rm" "-f" "f2616c58406ba35b2e0b94051c2e79f9908aa9da59f363129f2276ad62b46a06"`
[INFO] [stdout] f2616c58406ba35b2e0b94051c2e79f9908aa9da59f363129f2276ad62b46a06