[INFO] updating cached repository dsidor/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dsidor/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dsidor/rust-playground" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/dsidor/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/dsidor/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dsidor/rust-playground" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/dsidor/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/dsidor/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 49fe8cf62809153ee09ff20552db2c00b6ae007e
[INFO] sha for GitHub repo dsidor/rust-playground: 49fe8cf62809153ee09ff20552db2c00b6ae007e
[INFO] validating manifest of dsidor/rust-playground on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dsidor/rust-playground on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dsidor/rust-playground
[INFO] finished frobbing dsidor/rust-playground
[INFO] frobbed toml for dsidor/rust-playground written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/dsidor/rust-playground/Cargo.toml
[INFO] started frobbing dsidor/rust-playground
[INFO] finished frobbing dsidor/rust-playground
[INFO] frobbed toml for dsidor/rust-playground written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/dsidor/rust-playground/Cargo.toml
[INFO] crate dsidor/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dsidor/rust-playground against try#8ec8125bea94852768b56958f05da47666c21ab0 for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-1/try#8ec8125bea94852768b56958f05da47666c21ab0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/dsidor/rust-playground:/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" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e46fdc30ad0b3c23a19519eeafdf639cbf0bbc610a6e6473da0cac3718db118a
[INFO] running `"docker" "start" "-a" "e46fdc30ad0b3c23a19519eeafdf639cbf0bbc610a6e6473da0cac3718db118a"`
[INFO] [stderr]     Checking winapi v0.1.23
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking mio v0.4.4
[INFO] [stderr]     Checking ble-advs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `ControlMessage`
[INFO] [stderr]  --> src/main.rs:8:54
[INFO] [stderr]   |
[INFO] [stderr] 8 | use nix::sys::socket::{CmsgSpace, recvmsg, MsgFlags, ControlMessage};
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ControlMessage`
[INFO] [stderr]  --> src/main.rs:8:54
[INFO] [stderr]   |
[INFO] [stderr] 8 | use nix::sys::socket::{CmsgSpace, recvmsg, MsgFlags, ControlMessage};
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dump`
[INFO] [stderr]   --> src/main.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn dump<T>(d: &T) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Out`
[INFO] [stderr]    --> src/main.rs:183:5
[INFO] [stderr]     |
[INFO] [stderr] 183 |     Out
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dump`
[INFO] [stderr]   --> src/main.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn dump<T>(d: &T) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Out`
[INFO] [stderr]    --> src/main.rs:183:5
[INFO] [stderr]     |
[INFO] [stderr] 183 |     Out
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.79s
[INFO] running `"docker" "inspect" "e46fdc30ad0b3c23a19519eeafdf639cbf0bbc610a6e6473da0cac3718db118a"`
[INFO] running `"docker" "rm" "-f" "e46fdc30ad0b3c23a19519eeafdf639cbf0bbc610a6e6473da0cac3718db118a"`
[INFO] [stdout] e46fdc30ad0b3c23a19519eeafdf639cbf0bbc610a6e6473da0cac3718db118a