[INFO] cloning repository https://github.com/ZhangYan0001/rust_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZhangYan0001/rust_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhangYan0001%2Frust_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhangYan0001%2Frust_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e06beb3a522637e8d891932c15003debd5828f69
[INFO] checking ZhangYan0001/rust_test/e06beb3a522637e8d891932c15003debd5828f69 against try#ccf408f4326a858c00dd845a64a86b16f360a801 for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZhangYan0001%2Frust_test" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZhangYan0001/rust_test on toolchain ccf408f4326a858c00dd845a64a86b16f360a801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZhangYan0001/rust_test
[INFO] finished tweaking git repo https://github.com/ZhangYan0001/rust_test
[INFO] tweaked toml for git repo https://github.com/ZhangYan0001/rust_test written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ZhangYan0001/rust_test 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" "+ccf408f4326a858c00dd845a64a86b16f360a801" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42cdc77e49f30972f56bec34509110fa84a3159f117f122995357b07b184b42c
[INFO] running `Command { std: "docker" "start" "-a" "42cdc77e49f30972f56bec34509110fa84a3159f117f122995357b07b184b42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42cdc77e49f30972f56bec34509110fa84a3159f117f122995357b07b184b42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42cdc77e49f30972f56bec34509110fa84a3159f117f122995357b07b184b42c", kill_on_drop: false }`
[INFO] [stdout] 42cdc77e49f30972f56bec34509110fa84a3159f117f122995357b07b184b42c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+ccf408f4326a858c00dd845a64a86b16f360a801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0cf793553bdbcf0f9ceb723779b26738b09286924201a9c884527caabd9d853
[INFO] running `Command { std: "docker" "start" "-a" "a0cf793553bdbcf0f9ceb723779b26738b09286924201a9c884527caabd9d853", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Migrating Cargo.toml from 2021 edition to 2024
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking advance_rs_learn v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed src/lib.rs (7 fixes)
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]   --> src/lib.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:343:17
[INFO] [stdout]     |
[INFO] [stdout] 343 |             let b = *a + 1;
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/lib.rs:418:17
[INFO] [stdout]     |
[INFO] [stdout] 418 |             let sum = *z + 1;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]    --> src/lib.rs:438:17
[INFO] [stdout]     |
[INFO] [stdout] 438 |             let v2 = *v + 1;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `query` and `value` are never read
[INFO] [stdout]   --> src/lib.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub struct Cache<T>
[INFO] [stdout]    |                    ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |             query: T,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 32 |             value: Option<u32>,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `value` are never used
[INFO] [stdout]   --> src/lib.rs:39:16
[INFO] [stdout]    |
[INFO] [stdout] 35 | /         impl<T> Cache<T>
[INFO] [stdout] 36 | |         where
[INFO] [stdout] 37 | |             T: Fn(u32) -> u32,
[INFO] [stdout]    | |______________________________- associated items in this implementation
[INFO] [stdout] 38 |           {
[INFO] [stdout] 39 |               fn new(query: T) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |               fn value(&mut self, arg: u32) -> u32 {
[INFO] [stdout]    |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_once` is never used
[INFO] [stdout]   --> src/lib.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 86 |         fn fn_once<F>(func: F)
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_mut` is never used
[INFO] [stdout]   --> src/lib.rs:96:12
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_fn` is never used
[INFO] [stdout]    --> src/lib.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `for_vec` is never used
[INFO] [stdout]    --> src/lib.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |         fn for_vec(vec: &mut Vec<i32>) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_vec` is never used
[INFO] [stdout]    --> src/lib.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |         fn iter_vec(vec: &mut Vec<i32>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `diff_iters` is never used
[INFO] [stdout]    --> src/lib.rs:167:12
[INFO] [stdout]     |
[INFO] [stdout] 167 |         fn diff_iters() {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `consumer_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 201 |         fn consumer_adapter() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iterator_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:225:12
[INFO] [stdout]     |
[INFO] [stdout] 225 |         fn iterator_adapter() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_hash_map` is never used
[INFO] [stdout]    --> src/lib.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 235 |         fn collect_hash_map() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shoe` is never constructed
[INFO] [stdout]    --> src/lib.rs:243:16
[INFO] [stdout]     |
[INFO] [stdout] 243 |         struct Shoe {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `closure_adapter` is never used
[INFO] [stdout]    --> src/lib.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |         fn closure_adapter(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Counter` is never constructed
[INFO] [stdout]    --> src/lib.rs:257:16
[INFO] [stdout]     |
[INFO] [stdout] 257 |         struct Counter {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:262:16
[INFO] [stdout]     |
[INFO] [stdout] 261 |         impl Counter {
[INFO] [stdout]     |         ------------ associated function in this implementation
[INFO] [stdout] 262 |             fn new() -> Self {
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `box_ex` is never used
[INFO] [stdout]    --> src/lib.rs:339:12
[INFO] [stdout]     |
[INFO] [stdout] 339 |         fn box_ex() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dered_ex` is never used
[INFO] [stdout]    --> src/lib.rs:411:12
[INFO] [stdout]     |
[INFO] [stdout] 411 |         fn dered_ex() {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:424:20
[INFO] [stdout]     |
[INFO] [stdout] 423 |             impl<T> MyBox<T> {
[INFO] [stdout]     |             ---------------- associated function in this implementation
[INFO] [stdout] 424 |                 fn new(x: T) -> MyBox<T> {
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rc_ex` is never used
[INFO] [stdout]    --> src/lib.rs:451:12
[INFO] [stdout]     |
[INFO] [stdout] 451 |         fn rc_ex() {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arc_ex` is never used
[INFO] [stdout]    --> src/lib.rs:462:12
[INFO] [stdout]     |
[INFO] [stdout] 462 |         fn arc_ex() {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cell_ex` is never used
[INFO] [stdout]    --> src/lib.rs:476:12
[INFO] [stdout]     |
[INFO] [stdout] 476 |         fn cell_ex() {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `move_thread` is never used
[INFO] [stdout]    --> src/lib.rs:582:12
[INFO] [stdout]     |
[INFO] [stdout] 582 |         fn move_thread() {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RefCell` in this scope
[INFO] [stdout]    --> src/lib.rs:499:28
[INFO] [stdout]     |
[INFO] [stdout] 499 |                 msg_cache: RefCell<Vec<String>>,
[INFO] [stdout]     |                            ^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 324 +         use std::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2021 edition to 2024
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]    --> src/lib.rs:509:28
[INFO] [stdout]     |
[INFO] [stdout] 509 |                 msg_cache: RefCell::new(Vec::new()),
[INFO] [stdout]     |                            ^^^^^^^ use of undeclared type `RefCell`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 324 +         use std::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]    --> src/lib.rs:517:29
[INFO] [stdout]     |
[INFO] [stdout] 517 |             let s = Rc::new(RefCell::new("hello world".to_string()));
[INFO] [stdout]     |                             ^^^^^^^ use of undeclared type `RefCell`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 324 +         use std::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]    --> src/lib.rs:547:35
[INFO] [stdout]     |
[INFO] [stdout] 547 |                     thread::sleep(Duration::from_millis(1));
[INFO] [stdout]     |                                   ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]    --> src/lib.rs:553:31
[INFO] [stdout]     |
[INFO] [stdout] 553 |                 thread::sleep(Duration::from_millis(1));
[INFO] [stdout]     |                               ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]    --> src/lib.rs:568:35
[INFO] [stdout]     |
[INFO] [stdout] 568 |                     thread::sleep(Duration::from_millis(1));
[INFO] [stdout]     |                                   ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]    --> src/lib.rs:574:31
[INFO] [stdout]     |
[INFO] [stdout] 574 |                 thread::sleep(Duration::from_millis(1));
[INFO] [stdout]     |                               ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Duration`
[INFO] [stdout]    --> src/lib.rs:609:27
[INFO] [stdout]     |
[INFO] [stdout] 609 |             thread::sleep(Duration::from_millis(100));
[INFO] [stdout]     |                           ^^^^^^^^ use of undeclared type `Duration`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::time::Duration;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]    --> src/lib.rs:620:27
[INFO] [stdout]     |
[INFO] [stdout] 620 |             let barrier = Arc::new(Barrier::new(6));
[INFO] [stdout]     |                           ^^^ use of undeclared type `Arc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Barrier`
[INFO] [stdout]    --> src/lib.rs:620:36
[INFO] [stdout]     |
[INFO] [stdout] 620 |             let barrier = Arc::new(Barrier::new(6));
[INFO] [stdout]     |                                    ^^^^^^^ use of undeclared type `Barrier`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::sync::Barrier;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RefCell` in this scope
[INFO] [stdout]    --> src/lib.rs:647:33
[INFO] [stdout]     |
[INFO] [stdout] 647 |                 pub static FOO: RefCell<u32> = RefCell::new(1);
[INFO] [stdout]     |                                 ^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]    --> src/lib.rs:647:48
[INFO] [stdout]     |
[INFO] [stdout] 647 |                 pub static FOO: RefCell<u32> = RefCell::new(1);
[INFO] [stdout]     |                                                ^^^^^^^ use of undeclared type `RefCell`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Arc` in this scope
[INFO] [stdout]    --> src/lib.rs:670:22
[INFO] [stdout]     |
[INFO] [stdout] 670 |             let tls: Arc<ThreadLocal<Cell<i32>>> = Arc::new(ThreadLocal::new());
[INFO] [stdout]     |                      ^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `ThreadLocal` in this scope
[INFO] [stdout]    --> src/lib.rs:670:26
[INFO] [stdout]     |
[INFO] [stdout] 670 |             let tls: Arc<ThreadLocal<Cell<i32>>> = Arc::new(ThreadLocal::new());
[INFO] [stdout]     |                          ^^^^^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use thread_local::ThreadLocal;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Cell` in this scope
[INFO] [stdout]    --> src/lib.rs:670:38
[INFO] [stdout]     |
[INFO] [stdout] 670 |             let tls: Arc<ThreadLocal<Cell<i32>>> = Arc::new(ThreadLocal::new());
[INFO] [stdout]     |                                      ^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::cell::Cell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]    --> src/lib.rs:670:52
[INFO] [stdout]     |
[INFO] [stdout] 670 |             let tls: Arc<ThreadLocal<Cell<i32>>> = Arc::new(ThreadLocal::new());
[INFO] [stdout]     |                                                    ^^^ use of undeclared type `Arc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `ThreadLocal`
[INFO] [stdout]    --> src/lib.rs:670:61
[INFO] [stdout]     |
[INFO] [stdout] 670 |             let tls: Arc<ThreadLocal<Cell<i32>>> = Arc::new(ThreadLocal::new());
[INFO] [stdout]     |                                                             ^^^^^^^^^^^ use of undeclared type `ThreadLocal`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use thread_local::ThreadLocal;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Cell`
[INFO] [stdout]    --> src/lib.rs:677:47
[INFO] [stdout]     |
[INFO] [stdout] 677 |                     let cell = tls2.get_or(|| Cell::new(0));
[INFO] [stdout]     |                                               ^^^^ use of undeclared type `Cell`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::cell::Cell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]    --> src/lib.rs:686:23
[INFO] [stdout]     |
[INFO] [stdout] 686 |             let tls = Arc::try_unwrap(tls).unwrap();
[INFO] [stdout]     |                       ^^^ use of undeclared type `Arc`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 533 +         use std::sync::Arc;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]   --> src/lib.rs:96:22
[INFO] [stdout]    |
[INFO] [stdout] 96 |         fn fn_mut<F>(func: F)
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `func`
[INFO] [stdout]    --> src/lib.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |         fn fn_fn<F>(func: F)
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_func`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `idx`
[INFO] [stdout]    --> src/lib.rs:314:24
[INFO] [stdout]     |
[INFO] [stdout] 314 |                 .map(|(idx, val)| val)
[INFO] [stdout]     |                        ^^^ help: if this is intentional, prefix it with an underscore: `_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/lib.rs:343:17
[INFO] [stdout]     |
[INFO] [stdout] 343 |             let b = *a + 1;
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/lib.rs:418:17
[INFO] [stdout]     |
[INFO] [stdout] 418 |             let sum = *z + 1;
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advance_rs_learn` (lib test) due to 20 previous errors; 6 warnings emitted
[INFO] [stdout] warning: unused variable: `v2`
[INFO] [stdout]    --> src/lib.rs:438:17
[INFO] [stdout]     |
[INFO] [stdout] 438 |             let v2 = *v + 1;
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 19 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "a0cf793553bdbcf0f9ceb723779b26738b09286924201a9c884527caabd9d853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0cf793553bdbcf0f9ceb723779b26738b09286924201a9c884527caabd9d853", kill_on_drop: false }`
[INFO] [stdout] a0cf793553bdbcf0f9ceb723779b26738b09286924201a9c884527caabd9d853