[INFO] cloning repository arpith/chat-pubsub
[INFO] running `"git" "clone" "--bare" "git://github.com/arpith/chat-pubsub.git" "work/cache/sources/gh/arpith/chat-pubsub"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/arpith/chat-pubsub'...
[INFO] running `"git" "clone" "work/cache/sources/gh/arpith/chat-pubsub" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/arpith/chat-pubsub"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/arpith/chat-pubsub'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/arpith/chat-pubsub" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/arpith/chat-pubsub"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/arpith/chat-pubsub'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7b0849e31d549adc36301f8ce5fdb4a85cc36405
[INFO] sha for GitHub repo arpith/chat-pubsub: 7b0849e31d549adc36301f8ce5fdb4a85cc36405
[INFO] validating manifest of arpith/chat-pubsub on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of arpith/chat-pubsub on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing arpith/chat-pubsub
[INFO] finished frobbing arpith/chat-pubsub
[INFO] frobbed toml for arpith/chat-pubsub written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/arpith/chat-pubsub/Cargo.toml
[INFO] started frobbing arpith/chat-pubsub
[INFO] finished frobbing arpith/chat-pubsub
[INFO] frobbed toml for arpith/chat-pubsub written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/arpith/chat-pubsub/Cargo.toml
[INFO] crate arpith/chat-pubsub already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing arpith/chat-pubsub against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/arpith/chat-pubsub:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 85558ec5408147fdb3ae24fee01a9652f4950f36407559c8606f6ee470afb2d7
[INFO] running `"docker" "start" "-a" "85558ec5408147fdb3ae24fee01a9652f4950f36407559c8606f6ee470afb2d7"`
[INFO] [stderr]    Compiling chat-pubsub v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let mut stream_clone = stream.try_clone().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]     Finished dev [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `"docker" "inspect" "85558ec5408147fdb3ae24fee01a9652f4950f36407559c8606f6ee470afb2d7"`
[INFO] running `"docker" "rm" "-f" "85558ec5408147fdb3ae24fee01a9652f4950f36407559c8606f6ee470afb2d7"`
[INFO] [stdout] 85558ec5408147fdb3ae24fee01a9652f4950f36407559c8606f6ee470afb2d7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/arpith/chat-pubsub:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1ff5a403bec8c1a8b4ef2e4134676bac34c9f6715deb63b0a6a806da5c240097
[INFO] running `"docker" "start" "-a" "1ff5a403bec8c1a8b4ef2e4134676bac34c9f6715deb63b0a6a806da5c240097"`
[INFO] [stderr]    Compiling chat-pubsub v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |         let mut stream_clone = stream.try_clone().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]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "1ff5a403bec8c1a8b4ef2e4134676bac34c9f6715deb63b0a6a806da5c240097"`
[INFO] running `"docker" "rm" "-f" "1ff5a403bec8c1a8b4ef2e4134676bac34c9f6715deb63b0a6a806da5c240097"`
[INFO] [stdout] 1ff5a403bec8c1a8b4ef2e4134676bac34c9f6715deb63b0a6a806da5c240097
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-0/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/arpith/chat-pubsub:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 950de79050322c6664ef341d586c52a80b692364d11ead57d9ce274191b3ff7f
[INFO] running `"docker" "start" "-a" "950de79050322c6664ef341d586c52a80b692364d11ead57d9ce274191b3ff7f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chat_pubsub-ee75bcda20e2a0ab
[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" "950de79050322c6664ef341d586c52a80b692364d11ead57d9ce274191b3ff7f"`
[INFO] running `"docker" "rm" "-f" "950de79050322c6664ef341d586c52a80b692364d11ead57d9ce274191b3ff7f"`
[INFO] [stdout] 950de79050322c6664ef341d586c52a80b692364d11ead57d9ce274191b3ff7f