[INFO] cloning repository https://github.com/hoodie/rust-workshop-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hoodie/rust-workshop-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 546ad1274391213448c282914a46f558a5b137eb
[INFO] testing hoodie/rust-workshop-chat against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hoodie/rust-workshop-chat on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hoodie/rust-workshop-chat
[INFO] finished tweaking git repo https://github.com/hoodie/rust-workshop-chat
[INFO] tweaked toml for git repo https://github.com/hoodie/rust-workshop-chat written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/hoodie/rust-workshop-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4c2cc12afff0b600b7339d0a382d02452ce7cc6657865547370d2900d44f0f8
[INFO] running `Command { std: "docker" "start" "-a" "d4c2cc12afff0b600b7339d0a382d02452ce7cc6657865547370d2900d44f0f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4c2cc12afff0b600b7339d0a382d02452ce7cc6657865547370d2900d44f0f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4c2cc12afff0b600b7339d0a382d02452ce7cc6657865547370d2900d44f0f8", kill_on_drop: false }`
[INFO] [stdout] d4c2cc12afff0b600b7339d0a382d02452ce7cc6657865547370d2900d44f0f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f3492fe918737fb180a3976a7a7db63353648e1598fcd3b033d0c382d04f716
[INFO] running `Command { std: "docker" "start" "-a" "8f3492fe918737fb180a3976a7a7db63353648e1598fcd3b033d0c382d04f716", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling gimli v0.20.0
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling findshlibs v0.5.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling addr2line v0.11.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling scroll v0.10.1
[INFO] [stderr]    Compiling goblin v0.1.3
[INFO] [stderr]    Compiling backtrace v0.3.43
[INFO] [stderr]    Compiling color-backtrace v0.3.0
[INFO] [stderr]    Compiling workshop-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.09s
[INFO] running `Command { std: "docker" "inspect" "8f3492fe918737fb180a3976a7a7db63353648e1598fcd3b033d0c382d04f716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3492fe918737fb180a3976a7a7db63353648e1598fcd3b033d0c382d04f716", kill_on_drop: false }`
[INFO] [stdout] 8f3492fe918737fb180a3976a7a7db63353648e1598fcd3b033d0c382d04f716
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0725aa4986d8aa97777591932595606e6320043ef0b9ca59fc555d20b4f977a7
[INFO] running `Command { std: "docker" "start" "-a" "0725aa4986d8aa97777591932595606e6320043ef0b9ca59fc555d20b4f977a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling workshop-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Close`
[INFO] [stdout]   --> examples/server2.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Close,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> examples/server2.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `handler`
[INFO] [stdout]   --> examples/server2.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     handler: T,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Close`
[INFO] [stdout]   --> examples/server.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Close,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> examples/server.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "0725aa4986d8aa97777591932595606e6320043ef0b9ca59fc555d20b4f977a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0725aa4986d8aa97777591932595606e6320043ef0b9ca59fc555d20b4f977a7", kill_on_drop: false }`
[INFO] [stdout] 0725aa4986d8aa97777591932595606e6320043ef0b9ca59fc555d20b4f977a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 300920ad7150af1ccafe618c4e0d57389d45f7f8daa1570d8e476b8c9a4a922b
[INFO] running `Command { std: "docker" "start" "-a" "300920ad7150af1ccafe618c4e0d57389d45f7f8daa1570d8e476b8c9a4a922b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: variant is never constructed: `Close`
[INFO] [stderr]   --> examples/server.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Close,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> examples/server.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Close`
[INFO] [stderr]   --> examples/server2.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Close,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> examples/server2.rs:26:10
[INFO] [stderr]    |
[INFO] [stderr] 26 | #[derive(Debug)]
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `handler`
[INFO] [stderr]   --> examples/server2.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     handler: T,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `workshop-chat` (example "server") generated 1 warning
[INFO] [stderr] warning: `workshop-chat` (example "server2") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/workshop_chat-036231a4af3c912e)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "300920ad7150af1ccafe618c4e0d57389d45f7f8daa1570d8e476b8c9a4a922b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "300920ad7150af1ccafe618c4e0d57389d45f7f8daa1570d8e476b8c9a4a922b", kill_on_drop: false }`
[INFO] [stdout] 300920ad7150af1ccafe618c4e0d57389d45f7f8daa1570d8e476b8c9a4a922b