[INFO] updating cached repository wismer/rs_torrent
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wismer/rs_torrent
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wismer/rs_torrent" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wismer/rs_torrent"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wismer/rs_torrent'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wismer/rs_torrent" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wismer/rs_torrent"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wismer/rs_torrent'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b5209285c8f76a2d44e128239d0b79fb81d93081
[INFO] sha for GitHub repo wismer/rs_torrent: b5209285c8f76a2d44e128239d0b79fb81d93081
[INFO] validating manifest of wismer/rs_torrent on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wismer/rs_torrent on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wismer/rs_torrent
[INFO] finished frobbing wismer/rs_torrent
[INFO] frobbed toml for wismer/rs_torrent written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/wismer/rs_torrent/Cargo.toml
[INFO] started frobbing wismer/rs_torrent
[INFO] finished frobbing wismer/rs_torrent
[INFO] frobbed toml for wismer/rs_torrent written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wismer/rs_torrent/Cargo.toml
[INFO] crate wismer/rs_torrent already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking wismer/rs_torrent against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-4/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/wismer/rs_torrent:/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" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 27f50d6b108255413c94abee1ca569e640dfb6e73ce6d2339a3b15c502c56137
[INFO] running `"docker" "start" "-a" "27f50d6b108255413c94abee1ca569e640dfb6e73ce6d2339a3b15c502c56137"`
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking log v0.4.4
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking tokio-executor v0.1.3
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]     Checking want v0.0.6
[INFO] [stderr]     Checking tokio-timer v0.2.5
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking crossbeam-epoch v0.4.3
[INFO] [stderr]     Checking bip_bencode v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]     Checking tokio-io v0.1.7
[INFO] [stderr]     Checking http v0.1.10
[INFO] [stderr]     Checking tokio-threadpool v0.1.5
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.3
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.1
[INFO] [stderr]     Checking tokio-tcp v0.1.1
[INFO] [stderr]     Checking tokio v0.1.7
[INFO] [stderr]     Checking h2 v0.1.12
[INFO] [stderr]     Checking hyper v0.12.8
[INFO] [stderr]     Checking rs_bittorrent v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `torrent`
[INFO] [stderr]   --> src/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let torrent = Torrent::new(&torrent_content);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_torrent`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `announce_list`
[INFO] [stderr]   --> src/torrent/torrent.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let announce_list = dict.lookup(b"announce-list").unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_announce_list`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tracker_query_params`
[INFO] [stderr]   --> src/torrent/torrent.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn tracker_query_params(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     torrent_file.read_to_end(&mut contents);
[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 variable: `torrent`
[INFO] [stderr]   --> src/main.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let torrent = Torrent::new(&torrent_content);
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_torrent`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `announce_list`
[INFO] [stderr]   --> src/torrent/torrent.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let announce_list = dict.lookup(b"announce-list").unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_announce_list`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tracker_query_params`
[INFO] [stderr]   --> src/torrent/torrent.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn tracker_query_params(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     torrent_file.read_to_end(&mut contents);
[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 22.49s
[INFO] running `"docker" "inspect" "27f50d6b108255413c94abee1ca569e640dfb6e73ce6d2339a3b15c502c56137"`
[INFO] running `"docker" "rm" "-f" "27f50d6b108255413c94abee1ca569e640dfb6e73ce6d2339a3b15c502c56137"`
[INFO] [stdout] 27f50d6b108255413c94abee1ca569e640dfb6e73ce6d2339a3b15c502c56137