[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] b7f9af6d1f8d963765a0a00784d2259b9171bf68
[INFO] checking hoodie/rust-workshop-chat against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodie%2Frust-workshop-chat" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[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-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hoodie/rust-workshop-chat on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hoodie/rust-workshop-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.137
[INFO] [stderr]   Downloaded unicode-ident v1.0.1
[INFO] [stderr]   Downloaded color-backtrace v0.3.0
[INFO] [stderr]   Downloaded humantime v1.3.0
[INFO] [stderr]   Downloaded serde_derive v1.0.137
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.39
[INFO] [stderr]   Downloaded quote v1.0.18
[INFO] [stderr]   Downloaded backtrace v0.3.65
[INFO] [stderr]   Downloaded regex v1.5.6
[INFO] [stderr]   Downloaded object v0.28.4
[INFO] [stderr]   Downloaded regex-syntax v0.6.26
[INFO] [stderr]   Downloaded syn v1.0.96
[INFO] [stderr]   Downloaded gimli v0.26.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 750a682e1c8354037c8c18f88c886bd4cf78f949bee197424da4e4f7a8e71f43
[INFO] running `Command { std: "docker" "start" "-a" "750a682e1c8354037c8c18f88c886bd4cf78f949bee197424da4e4f7a8e71f43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "750a682e1c8354037c8c18f88c886bd4cf78f949bee197424da4e4f7a8e71f43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "750a682e1c8354037c8c18f88c886bd4cf78f949bee197424da4e4f7a8e71f43", kill_on_drop: false }`
[INFO] [stdout] 750a682e1c8354037c8c18f88c886bd4cf78f949bee197424da4e4f7a8e71f43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c209783f69727e619283ba0e378ea68b81d80a7ccfffcaa408df4255b221600
[INFO] running `Command { std: "docker" "start" "-a" "1c209783f69727e619283ba0e378ea68b81d80a7ccfffcaa408df4255b221600", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking color-backtrace v0.3.0
[INFO] [stderr]     Checking workshop-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Close` is never constructed
[INFO] [stdout]   --> examples/server2.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | enum PeerMessage {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 28 |     Message { content: String },
[INFO] [stdout] 29 |     Close,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `handler` is never read
[INFO] [stdout]   --> examples/server2.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Server<T: MsgHandler> {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 35 |     addr: String,
[INFO] [stdout] 36 |     handler: T,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Close` is never constructed
[INFO] [stdout]   --> examples/server.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum PeerMessage {
[INFO] [stdout]    |      ----------- variant in this enum
[INFO] [stdout] 29 |     Message { content: String },
[INFO] [stdout] 30 |     Close,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PeerMessage` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Protocol` is never used
[INFO] [stdout]   --> examples/server.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Protocol {}
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.11s
[INFO] running `Command { std: "docker" "inspect" "1c209783f69727e619283ba0e378ea68b81d80a7ccfffcaa408df4255b221600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c209783f69727e619283ba0e378ea68b81d80a7ccfffcaa408df4255b221600", kill_on_drop: false }`
[INFO] [stdout] 1c209783f69727e619283ba0e378ea68b81d80a7ccfffcaa408df4255b221600