[INFO] cloning repository https://github.com/ayourtch/ts-netops-simple-telnet
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ayourtch/ts-netops-simple-telnet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayourtch%2Fts-netops-simple-telnet"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayourtch%2Fts-netops-simple-telnet'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6925fa2d5f7f7466bf3c6783dd1ac82abfce16a6
[INFO] checking ayourtch/ts-netops-simple-telnet against try#8a749131e7beb72f6edacefd2bdcbed3d67b2112 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fayourtch%2Fts-netops-simple-telnet" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ayourtch/ts-netops-simple-telnet on toolchain 8a749131e7beb72f6edacefd2bdcbed3d67b2112
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ayourtch/ts-netops-simple-telnet
[INFO] finished tweaking git repo https://github.com/ayourtch/ts-netops-simple-telnet
[INFO] tweaked toml for git repo https://github.com/ayourtch/ts-netops-simple-telnet written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ayourtch/ts-netops-simple-telnet already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+8a749131e7beb72f6edacefd2bdcbed3d67b2112" "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] 28511ce2834ba53210e91f97116f69b65baba06f1ca388f372e7496665a07408
[INFO] running `"docker" "start" "-a" "28511ce2834ba53210e91f97116f69b65baba06f1ca388f372e7496665a07408"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking telnet v0.1.4
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking ts-netops-simple-telnet v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `author_failed_match`
[INFO] [stderr]   --> src/main.rs:62:37
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         if let Some(author_failed_match) = author_failed_regex.find(&data_buffer) {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_author_failed_match`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]   --> src/main.rs:69:29
[INFO] [stderr]    |
[INFO] [stderr] 69 | ...                   login_state = LoginState::Established;
[INFO] [stderr]    |                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]    --> src/main.rs:108:29
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   login_state = LoginState::Established;
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]    --> src/main.rs:169:29
[INFO] [stderr]     |
[INFO] [stderr] 169 | ...                   login_state = LoginState::Established;
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/main.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |         let mut result = "".to_string();
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]    --> src/main.rs:212:33
[INFO] [stderr]     |
[INFO] [stderr] 212 | ...                   login_state = LoginState::Established;
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EstablishedNonPriv`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     EstablishedNonPriv,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `author_failed_match`
[INFO] [stderr]   --> src/main.rs:62:37
[INFO] [stderr]    |
[INFO] [stderr] 62 |                         if let Some(author_failed_match) = author_failed_regex.find(&data_buffer) {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_author_failed_match`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]   --> src/main.rs:69:29
[INFO] [stderr]    |
[INFO] [stderr] 69 | ...                   login_state = LoginState::Established;
[INFO] [stderr]    |                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]    --> src/main.rs:108:29
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   login_state = LoginState::Established;
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]    --> src/main.rs:169:29
[INFO] [stderr]     |
[INFO] [stderr] 169 | ...                   login_state = LoginState::Established;
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `result` is never read
[INFO] [stderr]    --> src/main.rs:193:13
[INFO] [stderr]     |
[INFO] [stderr] 193 |         let mut result = "".to_string();
[INFO] [stderr]     |             ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `login_state` is never read
[INFO] [stderr]    --> src/main.rs:212:33
[INFO] [stderr]     |
[INFO] [stderr] 212 | ...                   login_state = LoginState::Established;
[INFO] [stderr]     |                       ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `EstablishedNonPriv`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     EstablishedNonPriv,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.03s
[INFO] running `"docker" "inspect" "28511ce2834ba53210e91f97116f69b65baba06f1ca388f372e7496665a07408"`
[INFO] running `"docker" "rm" "-f" "28511ce2834ba53210e91f97116f69b65baba06f1ca388f372e7496665a07408"`
[INFO] [stdout] 28511ce2834ba53210e91f97116f69b65baba06f1ca388f372e7496665a07408