[INFO] cloning repository https://github.com/zleihao/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/zleihao/rust-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzleihao%2Frust-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzleihao%2Frust-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40b6920645f9fbcc9bca282082b4a1708b6e2869
[INFO] fixing zleihao/rust-chat against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzleihao%2Frust-chat" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zleihao/rust-chat
[INFO] finished tweaking git repo https://github.com/zleihao/rust-chat
[INFO] tweaked toml for git repo https://github.com/zleihao/rust-chat written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zleihao/rust-chat on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zleihao/rust-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c
[INFO] running `Command { std: "docker" "start" "4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling serde v1.0.207
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.207
[INFO] [stderr]     Checking serde_json v1.0.124
[INFO] [stderr]     Checking rust-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `fd`
[INFO] [stdout]    --> src/server/server.rs:239:14
[INFO] [stdout]     |
[INFO] [stdout] 239 | fn broadcast(fd: TcpStream, name: String, buf: &Vec<&str>) {
[INFO] [stdout]     |              ^^ help: if this is intentional, prefix it with an underscore: `_fd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/server/parse_json.rs:31:27
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let mut mux = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]   --> src/server/server.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout] 23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/server/server.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 let mut mux = CLIENT_INFO.lock().unwrap();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout] 23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:118:27
[INFO] [stdout]     |
[INFO] [stdout] 118 |             let mut mux = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:173:23
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut mux = CLIENT_INFO.lock().unwrap();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:200:23
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut mux = CLIENT_INFO.lock().unwrap();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:222:23
[INFO] [stdout]     |
[INFO] [stdout] 222 |         let mut mux = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:241:19
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let map = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fd`
[INFO] [stdout]    --> src/server/server.rs:239:14
[INFO] [stdout]     |
[INFO] [stdout] 239 | fn broadcast(fd: TcpStream, name: String, buf: &Vec<&str>) {
[INFO] [stdout]     |              ^^ help: if this is intentional, prefix it with an underscore: `_fd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/server/parse_json.rs:31:27
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let mut mux = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]   --> src/server/server.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout] 23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> src/server/server.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 let mut mux = CLIENT_INFO.lock().unwrap();
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]    |
[INFO] [stdout] 23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout] 23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:118:27
[INFO] [stdout]     |
[INFO] [stdout] 118 |             let mut mux = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:173:23
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut mux = CLIENT_INFO.lock().unwrap();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:200:23
[INFO] [stdout]     |
[INFO] [stdout] 200 |         let mut mux = CLIENT_INFO.lock().unwrap();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:222:23
[INFO] [stdout]     |
[INFO] [stdout] 222 |         let mut mux = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]    --> src/server/server.rs:241:19
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let map = CLIENT_INFO.try_lock().unwrap();
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^ shared reference to mutable static
[INFO] [stdout]     |
[INFO] [stdout]     = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout] help: this type already provides "interior mutability", so its binding doesn't need to be declared as mutable
[INFO] [stdout]     |
[INFO] [stdout]  23 - pub static mut CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]  23 + pub static CLIENT_INFO: LazyLock<Mutex<HashMap<String, Info>>> =
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.30s
[INFO] [stderr] crater-edition-check: all finished
[INFO] running `Command { std: "docker" "inspect" "4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c", kill_on_drop: false }`
[INFO] [stdout] 4915d94a152d3965227d846976e4400f0a8ffdf7c3157fc96f01fcc51a71338c
