[INFO] updating cached repository felipesere/dotter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/felipesere/dotter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/felipesere/dotter" "work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/felipesere/dotter"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/felipesere/dotter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/felipesere/dotter" "work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/felipesere/dotter"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/felipesere/dotter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 123bf7f90bbc280d4cd9513fd328b199fe32cd22
[INFO] sha for GitHub repo felipesere/dotter: 123bf7f90bbc280d4cd9513fd328b199fe32cd22
[INFO] validating manifest of felipesere/dotter on toolchain master#2bde39b8edce6463e1c37f8a8082a875e7b536b1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of felipesere/dotter on toolchain try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing felipesere/dotter
[INFO] finished frobbing felipesere/dotter
[INFO] frobbed toml for felipesere/dotter written to work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/felipesere/dotter/Cargo.toml
[INFO] started frobbing felipesere/dotter
[INFO] finished frobbing felipesere/dotter
[INFO] frobbed toml for felipesere/dotter written to work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/felipesere/dotter/Cargo.toml
[INFO] crate felipesere/dotter has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking felipesere/dotter against master#2bde39b8edce6463e1c37f8a8082a875e7b536b1 for pr-57483
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57483/worker-1/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/felipesere/dotter:/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=forbid" "-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" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 46ceac5f34343d4608c2a105a34b41f5bb0328358c56498b72d04c8bbb100e70
[INFO] running `"docker" "start" "-a" "46ceac5f34343d4608c2a105a34b41f5bb0328358c56498b72d04c8bbb100e70"`
[INFO] [stderr]    Compiling git-version v0.2.1
[INFO] [stderr]     Checking symlink v0.1.0
[INFO] [stderr]     Checking serde_json v1.0.27
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking openssl v0.10.12
[INFO] [stderr]     Checking serde_urlencoded v0.5.3
[INFO] [stderr]     Checking tokio-reactor v0.1.5
[INFO] [stderr]    Compiling dotter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking tokio-uds v0.2.1
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio v0.1.8
[INFO] [stderr]     Checking native-tls v0.2.1
[INFO] [stderr]     Checking hyper v0.12.10
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]     Checking hyper-tls v0.3.0
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking reqwest v0.9.1
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/homebrew.rs:179:9
[INFO] [stderr]     |
[INFO] [stderr] 179 |         brew.execute(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/homebrew.rs:182:9
[INFO] [stderr]     |
[INFO] [stderr] 182 |         brew.rollback(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/homebrew.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |         brew_cask.execute(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/homebrew.rs:200:9
[INFO] [stderr]     |
[INFO] [stderr] 200 |         brew_cask.rollback(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/homebrew.rs:216:9
[INFO] [stderr]     |
[INFO] [stderr] 216 |         brew_cask.execute(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/homebrew.rs:219:9
[INFO] [stderr]     |
[INFO] [stderr] 219 |         brew_cask.rollback(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/shell.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |         echo_command.execute(&context);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/symlinks.rs:110:9
[INFO] [stderr]     |
[INFO] [stderr] 110 |         linker.execute(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/symlinks.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |         linker.rollback(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/symlinks.rs:141:9
[INFO] [stderr]     |
[INFO] [stderr] 141 |         linker.execute(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/symlinks.rs:146:9
[INFO] [stderr]     |
[INFO] [stderr] 146 |         linker.rollback(&context);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.28s
[INFO] running `"docker" "inspect" "46ceac5f34343d4608c2a105a34b41f5bb0328358c56498b72d04c8bbb100e70"`
[INFO] running `"docker" "rm" "-f" "46ceac5f34343d4608c2a105a34b41f5bb0328358c56498b72d04c8bbb100e70"`
[INFO] [stdout] 46ceac5f34343d4608c2a105a34b41f5bb0328358c56498b72d04c8bbb100e70