[INFO] updating cached repository sindreij/rust_irc_client
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sindreij/rust_irc_client
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sindreij/rust_irc_client" "work/ex/beta-1.38-1/sources/1.37.0/gh/sindreij/rust_irc_client"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sindreij/rust_irc_client'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sindreij/rust_irc_client" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sindreij/rust_irc_client"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sindreij/rust_irc_client'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5a7be4229324054918f6aaf217e78f4a674c508f
[INFO] sha for GitHub repo sindreij/rust_irc_client: 5a7be4229324054918f6aaf217e78f4a674c508f
[INFO] validating manifest of sindreij/rust_irc_client 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 sindreij/rust_irc_client 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 sindreij/rust_irc_client
[INFO] finished frobbing sindreij/rust_irc_client
[INFO] frobbed toml for sindreij/rust_irc_client written to work/ex/beta-1.38-1/sources/1.37.0/gh/sindreij/rust_irc_client/Cargo.toml
[INFO] started frobbing sindreij/rust_irc_client
[INFO] finished frobbing sindreij/rust_irc_client
[INFO] frobbed toml for sindreij/rust_irc_client written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sindreij/rust_irc_client/Cargo.toml
[INFO] crate sindreij/rust_irc_client 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sindreij/rust_irc_client/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 sindreij/rust_irc_client against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sindreij/rust_irc_client:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 0a234115ed8ad85ba7bbeb15861a7051f2ad7e14f052cd7d2e31203efa21b640
[INFO] running `"docker" "start" "-a" "0a234115ed8ad85ba7bbeb15861a7051f2ad7e14f052cd7d2e31203efa21b640"`
[INFO] [stderr]    Compiling challenge_258_irc_making_a_connection v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:142:31
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn messages(&self) -> Box<Iterator<Item=Message>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Message>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.07s
[INFO] running `"docker" "inspect" "0a234115ed8ad85ba7bbeb15861a7051f2ad7e14f052cd7d2e31203efa21b640"`
[INFO] running `"docker" "rm" "-f" "0a234115ed8ad85ba7bbeb15861a7051f2ad7e14f052cd7d2e31203efa21b640"`
[INFO] [stdout] 0a234115ed8ad85ba7bbeb15861a7051f2ad7e14f052cd7d2e31203efa21b640
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sindreij/rust_irc_client:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 42c33de3771517890c729d71b1991d03f464c74a0ca0d9a05252b2490470a17b
[INFO] running `"docker" "start" "-a" "42c33de3771517890c729d71b1991d03f464c74a0ca0d9a05252b2490470a17b"`
[INFO] [stderr]    Compiling challenge_258_irc_making_a_connection v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:142:31
[INFO] [stderr]     |
[INFO] [stderr] 142 |     fn messages(&self) -> Box<Iterator<Item=Message>> {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Message>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "42c33de3771517890c729d71b1991d03f464c74a0ca0d9a05252b2490470a17b"`
[INFO] running `"docker" "rm" "-f" "42c33de3771517890c729d71b1991d03f464c74a0ca0d9a05252b2490470a17b"`
[INFO] [stdout] 42c33de3771517890c729d71b1991d03f464c74a0ca0d9a05252b2490470a17b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sindreij/rust_irc_client:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 510440c831e7f43b7a97307430ead9f293495c5ad289ba60aab036af4475f3a3
[INFO] running `"docker" "start" "-a" "510440c831e7f43b7a97307430ead9f293495c5ad289ba60aab036af4475f3a3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/challenge_258_irc_making_a_connection-4544ac899cf91aca
[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" "510440c831e7f43b7a97307430ead9f293495c5ad289ba60aab036af4475f3a3"`
[INFO] running `"docker" "rm" "-f" "510440c831e7f43b7a97307430ead9f293495c5ad289ba60aab036af4475f3a3"`
[INFO] [stdout] 510440c831e7f43b7a97307430ead9f293495c5ad289ba60aab036af4475f3a3