[INFO] updating cached repository lukeKonopka/rust-ws-chat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lukeKonopka/rust-ws-chat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lukeKonopka/rust-ws-chat" "work/ex/beta-1.38-1/sources/1.37.0/gh/lukeKonopka/rust-ws-chat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lukeKonopka/rust-ws-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lukeKonopka/rust-ws-chat" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lukeKonopka/rust-ws-chat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lukeKonopka/rust-ws-chat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 06138137e53f6b70755e98477486fb12274a3f56
[INFO] sha for GitHub repo lukeKonopka/rust-ws-chat: 06138137e53f6b70755e98477486fb12274a3f56
[INFO] validating manifest of lukeKonopka/rust-ws-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 lukeKonopka/rust-ws-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 lukeKonopka/rust-ws-chat
[INFO] finished frobbing lukeKonopka/rust-ws-chat
[INFO] frobbed toml for lukeKonopka/rust-ws-chat written to work/ex/beta-1.38-1/sources/1.37.0/gh/lukeKonopka/rust-ws-chat/Cargo.toml
[INFO] started frobbing lukeKonopka/rust-ws-chat
[INFO] finished frobbing lukeKonopka/rust-ws-chat
[INFO] frobbed toml for lukeKonopka/rust-ws-chat written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lukeKonopka/rust-ws-chat/Cargo.toml
[INFO] crate lukeKonopka/rust-ws-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 lukeKonopka/rust-ws-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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lukeKonopka/rust-ws-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] 28921a97e9a0fd4e142faea4128f8484e23bdd004619aeaf8df3f18528185dda
[INFO] running `"docker" "start" "-a" "28921a97e9a0fd4e142faea4128f8484e23bdd004619aeaf8df3f18528185dda"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.8
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling mio-extras v2.0.5
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling ws v0.8.0
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling uuid v0.7.2
[INFO] [stderr]    Compiling rust-ws-chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:65:11
[INFO] [stderr]    |
[INFO] [stderr] 65 |   fn from(err: ws::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:73:11
[INFO] [stderr]    |
[INFO] [stderr] 73 |   fn from(err: serde_json::error::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `message`
[INFO] [stderr]   --> src/message.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   fn message(from: &str, to: &str, content: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]   --> src/message.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn error(msg: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `"docker" "inspect" "28921a97e9a0fd4e142faea4128f8484e23bdd004619aeaf8df3f18528185dda"`
[INFO] running `"docker" "rm" "-f" "28921a97e9a0fd4e142faea4128f8484e23bdd004619aeaf8df3f18528185dda"`
[INFO] [stdout] 28921a97e9a0fd4e142faea4128f8484e23bdd004619aeaf8df3f18528185dda
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lukeKonopka/rust-ws-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] dca49f074d81c1d16ceed3f91e3d1cb37d85844e2b237dd0db87856b1fde23bd
[INFO] running `"docker" "start" "-a" "dca49f074d81c1d16ceed3f91e3d1cb37d85844e2b237dd0db87856b1fde23bd"`
[INFO] [stderr]    Compiling rust-ws-chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:65:11
[INFO] [stderr]    |
[INFO] [stderr] 65 |   fn from(err: ws::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:73:11
[INFO] [stderr]    |
[INFO] [stderr] 73 |   fn from(err: serde_json::error::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `message`
[INFO] [stderr]   --> src/message.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   fn message(from: &str, to: &str, content: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]   --> src/message.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn error(msg: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "dca49f074d81c1d16ceed3f91e3d1cb37d85844e2b237dd0db87856b1fde23bd"`
[INFO] running `"docker" "rm" "-f" "dca49f074d81c1d16ceed3f91e3d1cb37d85844e2b237dd0db87856b1fde23bd"`
[INFO] [stdout] dca49f074d81c1d16ceed3f91e3d1cb37d85844e2b237dd0db87856b1fde23bd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lukeKonopka/rust-ws-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] f2af1d16c67eb98f448008055db0db3d0936c3878bcaf88569d9adef337b0e5f
[INFO] running `"docker" "start" "-a" "f2af1d16c67eb98f448008055db0db3d0936c3878bcaf88569d9adef337b0e5f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_ws_chat-d8cc02c80e49f373
[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" "f2af1d16c67eb98f448008055db0db3d0936c3878bcaf88569d9adef337b0e5f"`
[INFO] running `"docker" "rm" "-f" "f2af1d16c67eb98f448008055db0db3d0936c3878bcaf88569d9adef337b0e5f"`
[INFO] [stdout] f2af1d16c67eb98f448008055db0db3d0936c3878bcaf88569d9adef337b0e5f