[INFO] cloning repository https://github.com/47degrees/rust-2023-11-09
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/47degrees/rust-2023-11-09" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F47degrees%2Frust-2023-11-09", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F47degrees%2Frust-2023-11-09'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89c8c18245262b6fb6d3c6d639c66cf669e5adab
[INFO] testing 47degrees/rust-2023-11-09 against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F47degrees%2Frust-2023-11-09" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/47degrees/rust-2023-11-09 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/47degrees/rust-2023-11-09
[INFO] finished tweaking git repo https://github.com/47degrees/rust-2023-11-09
[INFO] tweaked toml for git repo https://github.com/47degrees/rust-2023-11-09 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/47degrees/rust-2023-11-09 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 743ffeb0a7c85493e7e0e065853f482553ac277a35bf76e407a75d4d690dd78d
[INFO] running `Command { std: "docker" "start" "-a" "743ffeb0a7c85493e7e0e065853f482553ac277a35bf76e407a75d4d690dd78d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "743ffeb0a7c85493e7e0e065853f482553ac277a35bf76e407a75d4d690dd78d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "743ffeb0a7c85493e7e0e065853f482553ac277a35bf76e407a75d4d690dd78d", kill_on_drop: false }`
[INFO] [stdout] 743ffeb0a7c85493e7e0e065853f482553ac277a35bf76e407a75d4d690dd78d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4a17f064e11fda3ef8c6b9f5f5d9a125afb9d05cc264041d83fe80f6edee2ba
[INFO] running `Command { std: "docker" "start" "-a" "b4a17f064e11fda3ef8c6b9f5f5d9a125afb9d05cc264041d83fe80f6edee2ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrent-arc v0.1.0 (/opt/rustwide/workdir/concurrent-arc)
[INFO] [stderr]    Compiling borrow v0.1.0 (/opt/rustwide/workdir/borrow)
[INFO] [stderr]    Compiling concurrent-rc-in-arc v0.1.0 (/opt/rustwide/workdir/concurrent-rc-in-arc)
[INFO] [stderr]    Compiling sneaky-borrow v0.1.0 (/opt/rustwide/workdir/sneaky-borrow)
[INFO] [stderr]    Compiling concurrent-arc-mutex v0.1.0 (/opt/rustwide/workdir/concurrent-arc-mutex)
[INFO] [stderr]    Compiling concurrent-rc v0.1.0 (/opt/rustwide/workdir/concurrent-rc)
[INFO] [stderr]    Compiling double-free v0.1.0 (/opt/rustwide/workdir/double-free)
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/rustwide/workdir/ownership)
[INFO] [stdout] error: lifetime may not live long enough
[INFO] [stdout]  --> sneaky-borrow/src/main.rs:5:2
[INFO] [stdout]   |
[INFO] [stdout] 2 |     a: &mut &i32,
[INFO] [stdout]   |             - let's call the lifetime of this reference `'1`
[INFO] [stdout] 3 |     b: &mut &i32
[INFO] [stdout]   |             - let's call the lifetime of this reference `'2`
[INFO] [stdout] 4 | ) {
[INFO] [stdout] 5 |     *b = *a;
[INFO] [stdout]   |     ^^^^^^^ assignment requires that `'1` must outlive `'2`
[INFO] [stdout]   |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 1 ~ fn assign_through_borrow<'a>(
[INFO] [stdout] 2 ~     a: &mut &'a i32,
[INFO] [stdout] 3 ~     b: &mut &'a i32
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `x`
[INFO] [stdout]  --> double-free/src/main.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let x = SomeStruct::default();
[INFO] [stdout]   |         - move occurs because `x` has type `SomeStruct`, which does not implement the `Copy` trait
[INFO] [stdout] 3 |     drop(x);
[INFO] [stdout]   |          - value moved here
[INFO] [stdout] 4 |     drop(x);
[INFO] [stdout]   |          ^ value used here after move
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sneaky-borrow` (bin "sneaky-borrow") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Rc<i32>` cannot be shared between threads safely
[INFO] [stdout]   --> concurrent-rc-in-arc/src/main.rs:9:21
[INFO] [stdout]    |
[INFO] [stdout] 9  |       let forked = spawn(move ||
[INFO] [stdout]    |  __________________-----_^
[INFO] [stdout]    | |                  |
[INFO] [stdout]    | |                  required by a bound introduced by this call
[INFO] [stdout] 10 | |         {
[INFO] [stdout] 11 | |             println!("first thread: {}", **copy);
[INFO] [stdout] 12 | |         }
[INFO] [stdout]    | |_________^ `Rc<i32>` cannot be shared between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Sync` is not implemented for `Rc<i32>`
[INFO] [stdout]    = note: required for `Arc<Rc<i32>>` to implement `Send`
[INFO] [stdout] note: required because it's used within this closure
[INFO] [stdout]   --> concurrent-rc-in-arc/src/main.rs:9:21
[INFO] [stdout]    |
[INFO] [stdout] 9  |     let forked = spawn(move ||
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:682:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Rc<i32>` cannot be sent between threads safely
[INFO] [stdout]   --> concurrent-rc-in-arc/src/main.rs:9:21
[INFO] [stdout]    |
[INFO] [stdout] 9  |       let forked = spawn(move ||
[INFO] [stdout]    |  __________________-----_^
[INFO] [stdout]    | |                  |
[INFO] [stdout]    | |                  required by a bound introduced by this call
[INFO] [stdout] 10 | |         {
[INFO] [stdout] 11 | |             println!("first thread: {}", **copy);
[INFO] [stdout] 12 | |         }
[INFO] [stdout]    | |_________^ `Rc<i32>` cannot be sent between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Send` is not implemented for `Rc<i32>`
[INFO] [stdout]    = note: required for `Arc<Rc<i32>>` to implement `Send`
[INFO] [stdout] note: required because it's used within this closure
[INFO] [stdout]   --> concurrent-rc-in-arc/src/main.rs:9:21
[INFO] [stdout]    |
[INFO] [stdout] 9  |     let forked = spawn(move ||
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:682:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `double-free` (bin "double-free") due to 2 previous errors
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `Rc<i32>` cannot be sent between threads safely
[INFO] [stdout]   --> concurrent-rc/src/main.rs:7:21
[INFO] [stdout]    |
[INFO] [stdout] 7  |       let forked = spawn(move ||
[INFO] [stdout]    |                    ----- ^------
[INFO] [stdout]    |                    |     |
[INFO] [stdout]    |  __________________|_____within this `{closure@concurrent-rc/src/main.rs:7:21: 7:28}`
[INFO] [stdout]    | |                  |
[INFO] [stdout]    | |                  required by a bound introduced by this call
[INFO] [stdout] 8  | |         {
[INFO] [stdout] 9  | |             println!("first thread: {}", *copy);
[INFO] [stdout] 10 | |         }
[INFO] [stdout]    | |_________^ `Rc<i32>` cannot be sent between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: within `{closure@concurrent-rc/src/main.rs:7:21: 7:28}`, the trait `Send` is not implemented for `Rc<i32>`
[INFO] [stdout] note: required because it's used within this closure
[INFO] [stdout]   --> concurrent-rc/src/main.rs:7:21
[INFO] [stdout]    |
[INFO] [stdout] 7  |     let forked = spawn(move ||
[INFO] [stdout]    |                        ^^^^^^^
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/std/src/thread/mod.rs:682:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `concurrent-rc-in-arc` (bin "concurrent-rc-in-arc") due to 3 previous errors
[INFO] [stderr] error: could not compile `concurrent-rc` (bin "concurrent-rc") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "b4a17f064e11fda3ef8c6b9f5f5d9a125afb9d05cc264041d83fe80f6edee2ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4a17f064e11fda3ef8c6b9f5f5d9a125afb9d05cc264041d83fe80f6edee2ba", kill_on_drop: false }`
[INFO] [stdout] b4a17f064e11fda3ef8c6b9f5f5d9a125afb9d05cc264041d83fe80f6edee2ba
