[INFO] updating cached repository https://github.com/dkeriazisStuy/Connect4Manager
[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] ab85dbb24b2d93d74acc7abcf588ba3b587dcc6f
[INFO] checking dkeriazisStuy/Connect4Manager against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdkeriazisStuy%2FConnect4Manager" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dkeriazisStuy/Connect4Manager on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dkeriazisStuy/Connect4Manager
[INFO] finished tweaking git repo https://github.com/dkeriazisStuy/Connect4Manager
[INFO] tweaked toml for git repo https://github.com/dkeriazisStuy/Connect4Manager written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/dkeriazisStuy/Connect4Manager already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "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] b8621abdf0f94df2c740dc0068a15372aa9a3ba11cb8da7ccadd69f89cbfa9a9
[INFO] running `"docker" "start" "-a" "b8621abdf0f94df2c740dc0068a15372aa9a3ba11cb8da7ccadd69f89cbfa9a9"`
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.1
[INFO] [stderr]     Checking ncurses v5.98.0
[INFO] [stderr]     Checking rand v0.6.4
[INFO] [stderr]     Checking battle_bots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let s = thread::spawn(move || {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0597]: `cmd` does not live long enough
[INFO] [stderr]   --> src/main.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let (tx, rx) = mpsc::channel();
[INFO] [stderr]    |          -- lifetime `'1` appears in the type of `tx`
[INFO] [stderr] ...
[INFO] [stderr] 53 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |         --------^^^^^^^^-
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       borrowed value does not live long enough
[INFO] [stderr]    |         argument requires that `cmd` is borrowed for `'1`
[INFO] [stderr] ...
[INFO] [stderr] 56 |     });
[INFO] [stderr]    |     - `cmd` dropped here while still borrowed
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `cmd` as mutable more than once at a time
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let (tx, rx) = mpsc::channel();
[INFO] [stderr]    |          -- lifetime `'1` appears in the type of `tx`
[INFO] [stderr] ...
[INFO] [stderr] 53 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |         -----------------
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       first mutable borrow occurs here
[INFO] [stderr]    |         argument requires that `cmd` is borrowed for `'1`
[INFO] [stderr] 54 |         cmd.wait();
[INFO] [stderr]    |         ^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `cmd` as mutable more than once at a time
[INFO] [stderr]   --> src/main.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let (tx, rx) = mpsc::channel();
[INFO] [stderr]    |          -- lifetime `'1` appears in the type of `tx`
[INFO] [stderr] ...
[INFO] [stderr] 53 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |         -----------------
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       first mutable borrow occurs here
[INFO] [stderr]    |         argument requires that `cmd` is borrowed for `'1`
[INFO] [stderr] 54 |         cmd.wait();
[INFO] [stderr] 55 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let mut child = rx.recv().unwrap();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0597.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: could not compile `battle_bots`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/main.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let s = thread::spawn(move || {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0597]: `cmd` does not live long enough
[INFO] [stderr]   --> src/main.rs:53:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let (tx, rx) = mpsc::channel();
[INFO] [stderr]    |          -- lifetime `'1` appears in the type of `tx`
[INFO] [stderr] ...
[INFO] [stderr] 53 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |         --------^^^^^^^^-
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       borrowed value does not live long enough
[INFO] [stderr]    |         argument requires that `cmd` is borrowed for `'1`
[INFO] [stderr] ...
[INFO] [stderr] 56 |     });
[INFO] [stderr]    |     - `cmd` dropped here while still borrowed
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `cmd` as mutable more than once at a time
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let (tx, rx) = mpsc::channel();
[INFO] [stderr]    |          -- lifetime `'1` appears in the type of `tx`
[INFO] [stderr] ...
[INFO] [stderr] 53 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |         -----------------
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       first mutable borrow occurs here
[INFO] [stderr]    |         argument requires that `cmd` is borrowed for `'1`
[INFO] [stderr] 54 |         cmd.wait();
[INFO] [stderr]    |         ^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] error[E0499]: cannot borrow `cmd` as mutable more than once at a time
[INFO] [stderr]   --> src/main.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let (tx, rx) = mpsc::channel();
[INFO] [stderr]    |          -- lifetime `'1` appears in the type of `tx`
[INFO] [stderr] ...
[INFO] [stderr] 53 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |         -----------------
[INFO] [stderr]    |         |       |
[INFO] [stderr]    |         |       first mutable borrow occurs here
[INFO] [stderr]    |         argument requires that `cmd` is borrowed for `'1`
[INFO] [stderr] 54 |         cmd.wait();
[INFO] [stderr] 55 |         tx.send(&mut cmd).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^ second mutable borrow occurs here
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let mut child = rx.recv().unwrap();
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0499, E0597.
[INFO] [stderr] For more information about an error, try `rustc --explain E0499`.
[INFO] [stderr] error: could not compile `battle_bots`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b8621abdf0f94df2c740dc0068a15372aa9a3ba11cb8da7ccadd69f89cbfa9a9"`
[INFO] running `"docker" "rm" "-f" "b8621abdf0f94df2c740dc0068a15372aa9a3ba11cb8da7ccadd69f89cbfa9a9"`
[INFO] [stdout] b8621abdf0f94df2c740dc0068a15372aa9a3ba11cb8da7ccadd69f89cbfa9a9
