[INFO] fetching crate srv-shim 0.1.2...
[INFO] extracting crate srv-shim 0.1.2 into work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/srv-shim/0.1.2
[INFO] extracting crate srv-shim 0.1.2 into work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/srv-shim/0.1.2
[INFO] validating manifest of srv-shim-0.1.2 on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of srv-shim-0.1.2 on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing srv-shim-0.1.2
[INFO] finished frobbing srv-shim-0.1.2
[INFO] frobbed toml for srv-shim-0.1.2 written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/srv-shim/0.1.2/Cargo.toml
[INFO] started frobbing srv-shim-0.1.2
[INFO] finished frobbing srv-shim-0.1.2
[INFO] frobbed toml for srv-shim-0.1.2 written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/reg/srv-shim/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plumber v0.0.6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking srv-shim-0.1.2 against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-6/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/reg/srv-shim/0.1.2:/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 56d5e08243bf17818b00ef768f8472bb01d922bb961ff15d22f4a663c052b1eb
[INFO] running `"docker" "start" "-a" "56d5e08243bf17818b00ef768f8472bb01d922bb961ff15d22f4a663c052b1eb"`
[INFO] [stderr]     Checking plumber v0.0.6
[INFO] [stderr]     Checking srv-shim v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/srvhook.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 | /             srv_mapper(h).map( |(new_port, new_ip)| {
[INFO] [stderr] 58 | |                 unsafe {
[INFO] [stderr] 59 | |                     // only override host and IP for AF_INET
[INFO] [stderr] 60 | |                     if (*address).sa_family == 2 {
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |                 Err(e)
[INFO] [stderr] 68 | |             });
[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/srvhook.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 | /             srv_mapper(h).map( |(new_port, new_ip)| {
[INFO] [stderr] 58 | |                 unsafe {
[INFO] [stderr] 59 | |                     // only override host and IP for AF_INET
[INFO] [stderr] 60 | |                     if (*address).sa_family == 2 {
[INFO] [stderr] ...  |
[INFO] [stderr] 67 | |                 Err(e)
[INFO] [stderr] 68 | |             });
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "56d5e08243bf17818b00ef768f8472bb01d922bb961ff15d22f4a663c052b1eb"`
[INFO] running `"docker" "rm" "-f" "56d5e08243bf17818b00ef768f8472bb01d922bb961ff15d22f4a663c052b1eb"`
[INFO] [stdout] 56d5e08243bf17818b00ef768f8472bb01d922bb961ff15d22f4a663c052b1eb