[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 beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 3860ad4e0410bd2fa6c95e55f1a8a1999698d86563a761c2cbb7c854920e8321
[INFO] running `"docker" "start" "-a" "3860ad4e0410bd2fa6c95e55f1a8a1999698d86563a761c2cbb7c854920e8321"`
[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 1.24s
[INFO] running `"docker" "inspect" "3860ad4e0410bd2fa6c95e55f1a8a1999698d86563a761c2cbb7c854920e8321"`
[INFO] running `"docker" "rm" "-f" "3860ad4e0410bd2fa6c95e55f1a8a1999698d86563a761c2cbb7c854920e8321"`
[INFO] [stdout] 3860ad4e0410bd2fa6c95e55f1a8a1999698d86563a761c2cbb7c854920e8321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] e0b84da64e596f7696b907aabaad1408b7cb15f3afcbeaad98c265cd80f670b3
[INFO] running `"docker" "start" "-a" "e0b84da64e596f7696b907aabaad1408b7cb15f3afcbeaad98c265cd80f670b3"`
[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 1.08s
[INFO] running `"docker" "inspect" "e0b84da64e596f7696b907aabaad1408b7cb15f3afcbeaad98c265cd80f670b3"`
[INFO] running `"docker" "rm" "-f" "e0b84da64e596f7696b907aabaad1408b7cb15f3afcbeaad98c265cd80f670b3"`
[INFO] [stdout] e0b84da64e596f7696b907aabaad1408b7cb15f3afcbeaad98c265cd80f670b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 3d595c0a2c3cc9f884ddc2107ef564f0c1b35c7c29cd9381f63eb82f8d6e6265
[INFO] running `"docker" "start" "-a" "3d595c0a2c3cc9f884ddc2107ef564f0c1b35c7c29cd9381f63eb82f8d6e6265"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lambda-361d62e99f131318
[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-e9df7f1004257ae1
[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" "3d595c0a2c3cc9f884ddc2107ef564f0c1b35c7c29cd9381f63eb82f8d6e6265"`
[INFO] running `"docker" "rm" "-f" "3d595c0a2c3cc9f884ddc2107ef564f0c1b35c7c29cd9381f63eb82f8d6e6265"`
[INFO] [stdout] 3d595c0a2c3cc9f884ddc2107ef564f0c1b35c7c29cd9381f63eb82f8d6e6265