[INFO] cloning repository https://github.com/morka17/understanding_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/morka17/understanding_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorka17%2Funderstanding_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorka17%2Funderstanding_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd2b3d8daa9b89944929783690acee497b7b96f2
[INFO] checking morka17/understanding_rust against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorka17%2Funderstanding_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/morka17/understanding_rust on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/morka17/understanding_rust
[INFO] finished tweaking git repo https://github.com/morka17/understanding_rust
[INFO] tweaked toml for git repo https://github.com/morka17/understanding_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/morka17/understanding_rust 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbb055e0620b11789fc63f5b05142e0f5554cced62cacb113c072217f80ff460
[INFO] running `Command { std: "docker" "start" "-a" "dbb055e0620b11789fc63f5b05142e0f5554cced62cacb113c072217f80ff460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbb055e0620b11789fc63f5b05142e0f5554cced62cacb113c072217f80ff460", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbb055e0620b11789fc63f5b05142e0f5554cced62cacb113c072217f80ff460", kill_on_drop: false }`
[INFO] [stdout] dbb055e0620b11789fc63f5b05142e0f5554cced62cacb113c072217f80ff460
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 531fe807bf965ca33d43d443413411baf4bc048ce42455147a2cedc889a32c2f
[INFO] running `Command { std: "docker" "start" "-a" "531fe807bf965ca33d43d443413411baf4bc048ce42455147a2cedc889a32c2f", kill_on_drop: false }`
[INFO] [stderr]     Checking understanding_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `RefCell`, `UnsafeCell`
[INFO] [stdout]   --> src/interior_mutability.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::cell::{RefCell, UnsafeCell};
[INFO] [stdout]    |                 ^^^^^^^  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> src/interior_mutability.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::sync::Arc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AtomicUsize`, `Ordering`
[INFO] [stdout]   --> src/interior_mutability.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::atomic::{AtomicUsize, Ordering};
[INFO] [stdout]    |                         ^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `hint`, `thread`
[INFO] [stdout]   --> src/interior_mutability.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::{hint, thread};
[INFO] [stdout]    |           ^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RefCell`
[INFO] [stdout]   --> src/interior_mutability.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::cell::{RefCell, UnsafeCell};
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/pointer_type.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/pointer_type.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut x = add(5, 7);
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `understanding_unsafeCell` should have a snake case name
[INFO] [stdout]   --> src/interior_mutability.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn understanding_unsafeCell() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `understanding_unsafe_cell`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "531fe807bf965ca33d43d443413411baf4bc048ce42455147a2cedc889a32c2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "531fe807bf965ca33d43d443413411baf4bc048ce42455147a2cedc889a32c2f", kill_on_drop: false }`
[INFO] [stdout] 531fe807bf965ca33d43d443413411baf4bc048ce42455147a2cedc889a32c2f
[INFO] checking morka17/understanding_rust against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorka17%2Funderstanding_rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/morka17/understanding_rust on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/morka17/understanding_rust
[INFO] finished tweaking git repo https://github.com/morka17/understanding_rust
[INFO] tweaked toml for git repo https://github.com/morka17/understanding_rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/morka17/understanding_rust 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c11c14c54acc30eeac94b168469f16090e3e65e9fab21905d0bcbeda4241102
[INFO] running `Command { std: "docker" "start" "-a" "7c11c14c54acc30eeac94b168469f16090e3e65e9fab21905d0bcbeda4241102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c11c14c54acc30eeac94b168469f16090e3e65e9fab21905d0bcbeda4241102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c11c14c54acc30eeac94b168469f16090e3e65e9fab21905d0bcbeda4241102", kill_on_drop: false }`
[INFO] [stdout] 7c11c14c54acc30eeac94b168469f16090e3e65e9fab21905d0bcbeda4241102
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a3477b86fa2eff500675c107a5116be3ed625254cb2bbe113f8816da9208613
[INFO] running `Command { std: "docker" "start" "-a" "8a3477b86fa2eff500675c107a5116be3ed625254cb2bbe113f8816da9208613", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking understanding_rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed src/interior_mutability.rs (4 fixes)
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/pointer_type.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn add(x: i32, y: i32) -> i32 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `UnsafeCell` in this scope
[INFO] [stdout]  --> src/interior_mutability.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |         let x: UnsafeCell<i32> = 42.into();
[INFO] [stdout]   |                ^^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 4 +     use core::cell::UnsafeCell;
[INFO] [stdout]   |
[INFO] [stdout] 4 +     use std::cell::UnsafeCell;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `UnsafeCell` in this scope
[INFO] [stdout]  --> src/interior_mutability.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let (p1, p2): (&UnsafeCell<i32>, &UnsafeCell<i32>) = (&x, &x);
[INFO] [stdout]   |                         ^^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 4 +     use core::cell::UnsafeCell;
[INFO] [stdout]   |
[INFO] [stdout] 4 +     use std::cell::UnsafeCell;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `UnsafeCell` in this scope
[INFO] [stdout]  --> src/interior_mutability.rs:9:43
[INFO] [stdout]   |
[INFO] [stdout] 9 |         let (p1, p2): (&UnsafeCell<i32>, &UnsafeCell<i32>) = (&x, &x);
[INFO] [stdout]   |                                           ^^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 4 +     use core::cell::UnsafeCell;
[INFO] [stdout]   |
[INFO] [stdout] 4 +     use std::cell::UnsafeCell;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]   --> src/interior_mutability.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let spinlock = Arc::new(AtomicUsize::new(1));
[INFO] [stdout]    |                        ^^^ use of undeclared type `Arc`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::sync::Arc;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AtomicUsize`
[INFO] [stdout]   --> src/interior_mutability.rs:37:33
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let spinlock = Arc::new(AtomicUsize::new(1));
[INFO] [stdout]    |                                 ^^^^^^^^^^^ use of undeclared type `AtomicUsize`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use core::sync::atomic::AtomicUsize;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::sync::atomic::AtomicUsize;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Arc`
[INFO] [stdout]   --> src/interior_mutability.rs:39:30
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let spinlock_clone = Arc::clone(&spinlock);
[INFO] [stdout]    |                              ^^^ use of undeclared type `Arc`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::sync::Arc;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `thread`
[INFO] [stdout]   --> src/interior_mutability.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let thread = thread::spawn(move ||{
[INFO] [stdout]    |                      ^^^^^^ use of undeclared crate or module `thread`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this module
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::thread;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Ordering`
[INFO] [stdout]   --> src/interior_mutability.rs:41:37
[INFO] [stdout]    |
[INFO] [stdout] 41 |             spinlock_clone.store(0, Ordering::SeqCst);
[INFO] [stdout]    |                                     ^^^^^^^^ use of undeclared type `Ordering`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use core::cmp::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use core::sync::atomic::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::cmp::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::sync::atomic::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Ordering`
[INFO] [stdout]   --> src/interior_mutability.rs:45:29
[INFO] [stdout]    |
[INFO] [stdout] 45 |         while spinlock.load(Ordering::SeqCst) != 0 {
[INFO] [stdout]    |                             ^^^^^^^^ use of undeclared type `Ordering`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use core::cmp::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use core::sync::atomic::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::cmp::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::sync::atomic::Ordering;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `understanding_rust` (lib test) due to 11 previous errors; 2 warnings emitted
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `hint`
[INFO] [stdout]   --> src/interior_mutability.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |             hint::spin_loop();
[INFO] [stdout]    |             ^^^^ use of undeclared crate or module `hint`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use core::hint;
[INFO] [stdout]    |
[INFO] [stdout] 4  +     use std::hint;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/interior_mutability.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/pointer_type.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut x = add(5, 7);
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 2 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" "8a3477b86fa2eff500675c107a5116be3ed625254cb2bbe113f8816da9208613", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3477b86fa2eff500675c107a5116be3ed625254cb2bbe113f8816da9208613", kill_on_drop: false }`
[INFO] [stdout] 8a3477b86fa2eff500675c107a5116be3ed625254cb2bbe113f8816da9208613