[INFO] updating cached repository firephyz/RustExamples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/firephyz/RustExamples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/firephyz/RustExamples" "work/ex/beta-1.38-1/sources/1.37.0/gh/firephyz/RustExamples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/firephyz/RustExamples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/firephyz/RustExamples" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/firephyz/RustExamples"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/firephyz/RustExamples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cedb78cb5996507d6cfc6fac37a565357dc19703
[INFO] sha for GitHub repo firephyz/RustExamples: cedb78cb5996507d6cfc6fac37a565357dc19703
[INFO] validating manifest of firephyz/RustExamples 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 firephyz/RustExamples 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 firephyz/RustExamples
[INFO] finished frobbing firephyz/RustExamples
[INFO] frobbed toml for firephyz/RustExamples written to work/ex/beta-1.38-1/sources/1.37.0/gh/firephyz/RustExamples/Cargo.toml
[INFO] started frobbing firephyz/RustExamples
[INFO] finished frobbing firephyz/RustExamples
[INFO] frobbed toml for firephyz/RustExamples written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/firephyz/RustExamples/Cargo.toml
[INFO] crate firephyz/RustExamples 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 firephyz/RustExamples 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/firephyz/RustExamples:/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] 251999bc504b2e0083bb8dcc1f4ff1b943340e2f18ac7871569e1d9610b46b24
[INFO] running `"docker" "start" "-a" "251999bc504b2e0083bb8dcc1f4ff1b943340e2f18ac7871569e1d9610b46b24"`
[INFO] [stderr]    Compiling lambda v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]  --> src/lib.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let file = match fs::File::open(&config.input_filename) {
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]   --> src/config.rs:47:19
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn is_option_flag(arg: &String) -> bool {
[INFO] [stderr]    |                   ^^^ help: consider prefixing with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `"docker" "inspect" "251999bc504b2e0083bb8dcc1f4ff1b943340e2f18ac7871569e1d9610b46b24"`
[INFO] running `"docker" "rm" "-f" "251999bc504b2e0083bb8dcc1f4ff1b943340e2f18ac7871569e1d9610b46b24"`
[INFO] [stdout] 251999bc504b2e0083bb8dcc1f4ff1b943340e2f18ac7871569e1d9610b46b24
[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/firephyz/RustExamples:/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] d19230e886f32017609f718aad871426458e68f58c348ed5d3e58eab2ee76697
[INFO] running `"docker" "start" "-a" "d19230e886f32017609f718aad871426458e68f58c348ed5d3e58eab2ee76697"`
[INFO] [stderr]    Compiling lambda v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]  --> src/lib.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let file = match fs::File::open(&config.input_filename) {
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_file`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arg`
[INFO] [stderr]   --> src/config.rs:47:19
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn is_option_flag(arg: &String) -> bool {
[INFO] [stderr]    |                   ^^^ help: consider prefixing with an underscore: `_arg`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "d19230e886f32017609f718aad871426458e68f58c348ed5d3e58eab2ee76697"`
[INFO] running `"docker" "rm" "-f" "d19230e886f32017609f718aad871426458e68f58c348ed5d3e58eab2ee76697"`
[INFO] [stdout] d19230e886f32017609f718aad871426458e68f58c348ed5d3e58eab2ee76697
[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/firephyz/RustExamples:/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] b83b629f6e5ae5aa8db237381c6eb81582851141ee8ccc1da5e4040e899bed53
[INFO] running `"docker" "start" "-a" "b83b629f6e5ae5aa8db237381c6eb81582851141ee8ccc1da5e4040e899bed53"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lambda-913263c3c1afea5a
[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] [stderr]      Running /opt/crater/target/debug/deps/lambda-dd9c5868a2424391
[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] [stderr]    Doc-tests lambda
[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" "b83b629f6e5ae5aa8db237381c6eb81582851141ee8ccc1da5e4040e899bed53"`
[INFO] running `"docker" "rm" "-f" "b83b629f6e5ae5aa8db237381c6eb81582851141ee8ccc1da5e4040e899bed53"`
[INFO] [stdout] b83b629f6e5ae5aa8db237381c6eb81582851141ee8ccc1da5e4040e899bed53