[INFO] updating cached repository sireliah/sillybumper
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sireliah/sillybumper
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sireliah/sillybumper" "work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sireliah/sillybumper" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sireliah/sillybumper"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sireliah/sillybumper'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2fba152ecab8ecebe5d64ba0915d44bf7c21570c
[INFO] sha for GitHub repo sireliah/sillybumper: 2fba152ecab8ecebe5d64ba0915d44bf7c21570c
[INFO] validating manifest of sireliah/sillybumper 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 sireliah/sillybumper 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 sireliah/sillybumper
[INFO] finished frobbing sireliah/sillybumper
[INFO] frobbed toml for sireliah/sillybumper written to work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper/Cargo.toml
[INFO] started frobbing sireliah/sillybumper
[INFO] finished frobbing sireliah/sillybumper
[INFO] frobbed toml for sireliah/sillybumper written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sireliah/sillybumper/Cargo.toml
[INFO] crate sireliah/sillybumper 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] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 sireliah/sillybumper 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper:/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] 384dd1525611a39d0e2f270f61477b08a5ba44b43e15bb2bfc31b5438b9f6644
[INFO] running `"docker" "start" "-a" "384dd1525611a39d0e2f270f61477b08a5ba44b43e15bb2bfc31b5438b9f6644"`
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling http v0.1.18
[INFO] [stderr]    Compiling tokio-buf v0.1.1
[INFO] [stderr]    Compiling string v0.2.1
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling http-body v0.1.0
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling sillybumper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:61
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn parse_contents(contents: &str) -> Result<(i32, i32), Box<std::error::Error>> {
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:71:54
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn read_file(file_path: &Path) -> Result<String, Box<std::error::Error>> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:78:79
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn write_file(file_path: &Path, l_value: i32, r_value: i32) -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.64s
[INFO] running `"docker" "inspect" "384dd1525611a39d0e2f270f61477b08a5ba44b43e15bb2bfc31b5438b9f6644"`
[INFO] running `"docker" "rm" "-f" "384dd1525611a39d0e2f270f61477b08a5ba44b43e15bb2bfc31b5438b9f6644"`
[INFO] [stdout] 384dd1525611a39d0e2f270f61477b08a5ba44b43e15bb2bfc31b5438b9f6644
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper:/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] b29e9cf013b9853f1d1c13a63a59016469da8fb3d99ad2dc1ffa9332b2131391
[INFO] running `"docker" "start" "-a" "b29e9cf013b9853f1d1c13a63a59016469da8fb3d99ad2dc1ffa9332b2131391"`
[INFO] [stderr]    Compiling sillybumper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:61
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn parse_contents(contents: &str) -> Result<(i32, i32), Box<std::error::Error>> {
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:71:54
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn read_file(file_path: &Path) -> Result<String, Box<std::error::Error>> {
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:78:79
[INFO] [stderr]    |
[INFO] [stderr] 78 | fn write_file(file_path: &Path, l_value: i32, r_value: i32) -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.93s
[INFO] running `"docker" "inspect" "b29e9cf013b9853f1d1c13a63a59016469da8fb3d99ad2dc1ffa9332b2131391"`
[INFO] running `"docker" "rm" "-f" "b29e9cf013b9853f1d1c13a63a59016469da8fb3d99ad2dc1ffa9332b2131391"`
[INFO] [stdout] b29e9cf013b9853f1d1c13a63a59016469da8fb3d99ad2dc1ffa9332b2131391
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sireliah/sillybumper:/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] b63cd07f69788cf380b1a4624aff729359f16fc077c5bb51a959901a189f8250
[INFO] running `"docker" "start" "-a" "b63cd07f69788cf380b1a4624aff729359f16fc077c5bb51a959901a189f8250"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sillybumper-c243aa726472a01d
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_parse_contents ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b63cd07f69788cf380b1a4624aff729359f16fc077c5bb51a959901a189f8250"`
[INFO] running `"docker" "rm" "-f" "b63cd07f69788cf380b1a4624aff729359f16fc077c5bb51a959901a189f8250"`
[INFO] [stdout] b63cd07f69788cf380b1a4624aff729359f16fc077c5bb51a959901a189f8250