[INFO] updating cached repository glasses-n-contacts/rust-chat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/glasses-n-contacts/rust-chat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/glasses-n-contacts/rust-chat" "work/ex/beta-1.38-1/sources/1.37.0/gh/glasses-n-contacts/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/glasses-n-contacts/rust-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/glasses-n-contacts/rust-chat" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/glasses-n-contacts/rust-chat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/glasses-n-contacts/rust-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0fca64e1c6464c28e216859ca78b24a855bb4621
[INFO] sha for GitHub repo glasses-n-contacts/rust-chat: 0fca64e1c6464c28e216859ca78b24a855bb4621
[INFO] validating manifest of glasses-n-contacts/rust-chat 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 glasses-n-contacts/rust-chat 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 glasses-n-contacts/rust-chat
[INFO] finished frobbing glasses-n-contacts/rust-chat
[INFO] frobbed toml for glasses-n-contacts/rust-chat written to work/ex/beta-1.38-1/sources/1.37.0/gh/glasses-n-contacts/rust-chat/Cargo.toml
[INFO] started frobbing glasses-n-contacts/rust-chat
[INFO] finished frobbing glasses-n-contacts/rust-chat
[INFO] frobbed toml for glasses-n-contacts/rust-chat written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/glasses-n-contacts/rust-chat/Cargo.toml
[INFO] crate glasses-n-contacts/rust-chat 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing glasses-n-contacts/rust-chat 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/glasses-n-contacts/rust-chat:/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] 59c9f431f0daa1d517871b3b91199432e56f2e9f7237dcbf2986ac5ccaa867c9
[INFO] running `"docker" "start" "-a" "59c9f431f0daa1d517871b3b91199432e56f2e9f7237dcbf2986ac5ccaa867c9"`
[INFO] [stderr]    Compiling http-muncher v0.2.5
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling sha1 v0.1.1
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/socket_server.rs:43:25
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     let mut client = self.clients.get_mut(&token).unwrap();
[INFO] [stderr]    |                         ----^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/socket_client/frame.rs:202:13
[INFO] [stderr]     |
[INFO] [stderr] 202 |             body.write(status_code);
[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/socket_server.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             client.socket.shutdown(Shutdown::Both);
[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/socket_server.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |             event_loop.deregister(&client.socket);
[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 11.57s
[INFO] running `"docker" "inspect" "59c9f431f0daa1d517871b3b91199432e56f2e9f7237dcbf2986ac5ccaa867c9"`
[INFO] running `"docker" "rm" "-f" "59c9f431f0daa1d517871b3b91199432e56f2e9f7237dcbf2986ac5ccaa867c9"`
[INFO] [stdout] 59c9f431f0daa1d517871b3b91199432e56f2e9f7237dcbf2986ac5ccaa867c9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/glasses-n-contacts/rust-chat:/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] ec325a6963e1797db5586c782d7cf639e2f15439995c5cbd6347614316797084
[INFO] running `"docker" "start" "-a" "ec325a6963e1797db5586c782d7cf639e2f15439995c5cbd6347614316797084"`
[INFO] [stderr]    Compiling chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/socket_server.rs:43:25
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     let mut client = self.clients.get_mut(&token).unwrap();
[INFO] [stderr]    |                         ----^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/socket_client/frame.rs:202:13
[INFO] [stderr]     |
[INFO] [stderr] 202 |             body.write(status_code);
[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/socket_server.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             client.socket.shutdown(Shutdown::Both);
[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/socket_server.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |             event_loop.deregister(&client.socket);
[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 1.75s
[INFO] running `"docker" "inspect" "ec325a6963e1797db5586c782d7cf639e2f15439995c5cbd6347614316797084"`
[INFO] running `"docker" "rm" "-f" "ec325a6963e1797db5586c782d7cf639e2f15439995c5cbd6347614316797084"`
[INFO] [stdout] ec325a6963e1797db5586c782d7cf639e2f15439995c5cbd6347614316797084
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/glasses-n-contacts/rust-chat:/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] f45300f89774881e2f5d7cb41b1e22ae0ab587279720e342feb8766f159e9628
[INFO] running `"docker" "start" "-a" "f45300f89774881e2f5d7cb41b1e22ae0ab587279720e342feb8766f159e9628"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chat-d2903e8e65ac649a
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chat-aa906890bb5aebd7
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests chat
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f45300f89774881e2f5d7cb41b1e22ae0ab587279720e342feb8766f159e9628"`
[INFO] running `"docker" "rm" "-f" "f45300f89774881e2f5d7cb41b1e22ae0ab587279720e342feb8766f159e9628"`
[INFO] [stdout] f45300f89774881e2f5d7cb41b1e22ae0ab587279720e342feb8766f159e9628