[INFO] cloning repository https://github.com/maelvalais/rust-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maelvalais/rust-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaelvalais%2Frust-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaelvalais%2Frust-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ddd63a81b2bc7d15709d81e3dfc79bf30bdb9c9e
[INFO] checking maelvalais/rust-chat against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaelvalais%2Frust-chat" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/maelvalais/rust-chat on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/maelvalais/rust-chat
[INFO] finished tweaking git repo https://github.com/maelvalais/rust-chat
[INFO] tweaked toml for git repo https://github.com/maelvalais/rust-chat written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/maelvalais/rust-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec3922c670d7e4a27bb1ec1d01a63fb4aa9f9a95ac22c58472fb43d5721e1de3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ec3922c670d7e4a27bb1ec1d01a63fb4aa9f9a95ac22c58472fb43d5721e1de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec3922c670d7e4a27bb1ec1d01a63fb4aa9f9a95ac22c58472fb43d5721e1de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3922c670d7e4a27bb1ec1d01a63fb4aa9f9a95ac22c58472fb43d5721e1de3", kill_on_drop: false }`
[INFO] [stdout] ec3922c670d7e4a27bb1ec1d01a63fb4aa9f9a95ac22c58472fb43d5721e1de3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03672e149f54be231d86a108eaae520b820c67996264bf57d2b113f7dbe91c5f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "03672e149f54be231d86a108eaae520b820c67996264bf57d2b113f7dbe91c5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]     Checking libc v0.2.37
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking colored v1.6.0
[INFO] [stderr]     Checking atty v0.2.6
[INFO] [stderr]     Checking clap v2.30.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking backtrace v0.3.5
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking rust-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::vec::Vec::<T, A>::remove_item`: Removing the first item equal to a needle is already easily possible with iterators and the current Vec methods. Furthermore, having a method for one particular case of removal (linear search, only the first item, no swap remove) but not for others is inconsistent. This method will be removed soon.
[INFO] [stdout]    --> src/main.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 writers.remove_item(&w);
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::vec::Vec::<T, A>::remove_item`: Removing the first item equal to a needle is already easily possible with iterators and the current Vec methods. Furthermore, having a method for one particular case of removal (linear search, only the first item, no swap remove) but not for others is inconsistent. This method will be removed soon.
[INFO] [stdout]    --> src/main.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 writers.remove_item(&w);
[INFO] [stdout]     |                         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.46s
[INFO] running `Command { std: "docker" "inspect" "03672e149f54be231d86a108eaae520b820c67996264bf57d2b113f7dbe91c5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03672e149f54be231d86a108eaae520b820c67996264bf57d2b113f7dbe91c5f", kill_on_drop: false }`
[INFO] [stdout] 03672e149f54be231d86a108eaae520b820c67996264bf57d2b113f7dbe91c5f