[INFO] updating cached repository https://github.com/echochamber/rust_chat [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 254f76a923455cf4b4a0928e5d5eabe1ae8aeb1a [INFO] testing echochamber/rust_chat against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fechochamber%2Frust_chat" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/echochamber/rust_chat on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/echochamber/rust_chat [INFO] finished tweaking git repo https://github.com/echochamber/rust_chat [INFO] tweaked toml for git repo https://github.com/echochamber/rust_chat written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/echochamber/rust_chat already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a82255f0beac12f9f832a47bc49ffa38ce2f42558b6442f49944739f2e35d9ed [INFO] running `"docker" "start" "-a" "a82255f0beac12f9f832a47bc49ffa38ce2f42558b6442f49944739f2e35d9ed"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling bytes v0.2.11 [INFO] [stderr] Compiling slab v0.1.3 [INFO] [stderr] Compiling libc v0.2.71 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling nix v0.3.10 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling time v0.1.43 [INFO] [stderr] Compiling winapi v0.1.23 [INFO] [stderr] Compiling mio v0.4.4 [INFO] [stderr] Compiling simple_chat v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(convert)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![feature(ip_addr)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `EventLoop`, `Token` [INFO] [stderr] --> src/chat_server/connection.rs:9:11 [INFO] [stderr] | [INFO] [stderr] 9 | use mio::{Token, EventLoop, EventSet, TryRead, TryWrite, PollOpt}; [INFO] [stderr] | ^^^^^ ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `SERVER_TOKEN` [INFO] [stderr] --> src/chat_server/mod.rs:11:20 [INFO] [stderr] | [INFO] [stderr] 11 | use self::server::{SERVER_TOKEN, ChatServer}; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/chat_server/connection.rs:100:21 [INFO] [stderr] | [INFO] [stderr] 100 | return match String::from_utf8(read_buf) { [INFO] [stderr] | ______________________^______- [INFO] [stderr] | | _____________________| [INFO] [stderr] | || [INFO] [stderr] 101 | || Ok(message) => { [INFO] [stderr] 102 | || return Ok(Some(message)); [INFO] [stderr] 103 | || }, [INFO] [stderr] ... || [INFO] [stderr] 106 | || } [INFO] [stderr] 107 | || } [INFO] [stderr] | || ^ [INFO] [stderr] | ||_____________________| [INFO] [stderr] | |______________________unreachable expression [INFO] [stderr] | any code following this `match` expression is unreachable, as all arms diverge [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors; 3 warnings emitted [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: could not compile `simple_chat`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "a82255f0beac12f9f832a47bc49ffa38ce2f42558b6442f49944739f2e35d9ed"` [INFO] running `"docker" "rm" "-f" "a82255f0beac12f9f832a47bc49ffa38ce2f42558b6442f49944739f2e35d9ed"` [INFO] [stdout] a82255f0beac12f9f832a47bc49ffa38ce2f42558b6442f49944739f2e35d9ed