[INFO] cloning repository https://github.com/alyjak/distributed-chat
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alyjak/distributed-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falyjak%2Fdistributed-chat"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falyjak%2Fdistributed-chat'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 100050eb8b2a9e91ccdc97cb89ac857cafdad61b
[INFO] checking alyjak/distributed-chat against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falyjak%2Fdistributed-chat" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alyjak/distributed-chat on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alyjak/distributed-chat
[INFO] finished tweaking git repo https://github.com/alyjak/distributed-chat
[INFO] tweaked toml for git repo https://github.com/alyjak/distributed-chat written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/alyjak/distributed-chat already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 69d25d47ce006466eb7854426c7945b1cbf9ffee6f4550fb8f1be88c014f2e14
[INFO] running `"docker" "start" "-a" "69d25d47ce006466eb7854426c7945b1cbf9ffee6f4550fb8f1be88c014f2e14"`
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking tokio-io v0.1.10
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.3
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking assignment v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/message.rs:226:9
[INFO] [stderr]     |
[INFO] [stderr] 226 | /         write!(
[INFO] [stderr] 227 | |             f,
[INFO] [stderr] 228 | |             "[{} {}]",
[INFO] [stderr] 229 | |             unsafe { from_utf8_unchecked(&self.from[..]) },
[INFO] [stderr] 230 | |             self.typ
[INFO] [stderr] 231 | |         );
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/message.rs:235:17
[INFO] [stderr]     |
[INFO] [stderr] 235 |                 write!(f, ": {}", unsafe { from_utf8_unchecked(&self.content[..]) });
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/message.rs:226:9
[INFO] [stderr]     |
[INFO] [stderr] 226 | /         write!(
[INFO] [stderr] 227 | |             f,
[INFO] [stderr] 228 | |             "[{} {}]",
[INFO] [stderr] 229 | |             unsafe { from_utf8_unchecked(&self.from[..]) },
[INFO] [stderr] 230 | |             self.typ
[INFO] [stderr] 231 | |         );
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/message.rs:235:17
[INFO] [stderr]     |
[INFO] [stderr] 235 |                 write!(f, ": {}", unsafe { from_utf8_unchecked(&self.content[..]) });
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:26:29
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn main() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.94s
[INFO] running `"docker" "inspect" "69d25d47ce006466eb7854426c7945b1cbf9ffee6f4550fb8f1be88c014f2e14"`
[INFO] running `"docker" "rm" "-f" "69d25d47ce006466eb7854426c7945b1cbf9ffee6f4550fb8f1be88c014f2e14"`
[INFO] [stdout] 69d25d47ce006466eb7854426c7945b1cbf9ffee6f4550fb8f1be88c014f2e14