[INFO] cloning repository https://github.com/dpzmick/rs-async-toy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dpzmick/rs-async-toy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpzmick%2Frs-async-toy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpzmick%2Frs-async-toy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e9b49472952e0afa22902eda8bca378e433b7b1
[INFO] checking dpzmick/rs-async-toy/3e9b49472952e0afa22902eda8bca378e433b7b1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdpzmick%2Frs-async-toy" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dpzmick/rs-async-toy on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dpzmick/rs-async-toy
[INFO] finished tweaking git repo https://github.com/dpzmick/rs-async-toy
[INFO] tweaked toml for git repo https://github.com/dpzmick/rs-async-toy written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dpzmick/rs-async-toy 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eba5a5059e52d923d7d1a3f098b25dc959e93ac5e655bf3c01348f7d92414c4a
[INFO] running `Command { std: "docker" "start" "-a" "eba5a5059e52d923d7d1a3f098b25dc959e93ac5e655bf3c01348f7d92414c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eba5a5059e52d923d7d1a3f098b25dc959e93ac5e655bf3c01348f7d92414c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eba5a5059e52d923d7d1a3f098b25dc959e93ac5e655bf3c01348f7d92414c4a", kill_on_drop: false }`
[INFO] [stdout] eba5a5059e52d923d7d1a3f098b25dc959e93ac5e655bf3c01348f7d92414c4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3b5b18ceac14e0a6d5f65add50ae5d6056951bd1e909f8ca4ee162bdf3851ce
[INFO] running `Command { std: "docker" "start" "-a" "c3b5b18ceac14e0a6d5f65add50ae5d6056951bd1e909f8ca4ee162bdf3851ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking rs-async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `ptr_offset_from` has been stable since 1.47.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ptr_offset_from)]    // to do pointer offset calculations
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pool.rs:116:50
[INFO] [stdout]     |
[INFO] [stdout] 116 |             if unsafe { (*self.used_list.add(i)).compare_and_swap(false, true, Ordering::AcqRel) } == false {
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `ptr_offset_from` has been stable since 1.47.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(ptr_offset_from)]    // to do pointer offset calculations
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]   --> src/main.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct Thing {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 80 |     a: u64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 81 |     b: u64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Thing` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `required_align` is never used
[INFO] [stdout]   --> src/pool.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl<'a, T: 'a + Copy> Pool<'a, T> {
[INFO] [stdout]    | ---------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn required_align() -> usize { Self::layout(1 /* doesn't matter here */).0.align() }
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `join` and `as_slice` are never used
[INFO] [stdout]   --> src/mem.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MappedRegion {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn join(name: &str, size: usize) -> Result<Self, i32> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn as_slice(&mut self) -> &mut [u8] {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::AtomicBool::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/pool.rs:116:50
[INFO] [stdout]     |
[INFO] [stdout] 116 |             if unsafe { (*self.used_list.add(i)).compare_and_swap(false, true, Ordering::AcqRel) } == false {
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a` and `b` are never read
[INFO] [stdout]   --> src/main.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct Thing {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 80 |     a: u64,
[INFO] [stdout]    |     ^
[INFO] [stdout] 81 |     b: u64,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Thing` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `required_align` is never used
[INFO] [stdout]   --> src/pool.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl<'a, T: 'a + Copy> Pool<'a, T> {
[INFO] [stdout]    | ---------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn required_align() -> usize { Self::layout(1 /* doesn't matter here */).0.align() }
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `join` and `as_slice` are never used
[INFO] [stdout]   --> src/mem.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl MappedRegion {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn join(name: &str, size: usize) -> Result<Self, i32> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn as_slice(&mut self) -> &mut [u8] {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "c3b5b18ceac14e0a6d5f65add50ae5d6056951bd1e909f8ca4ee162bdf3851ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3b5b18ceac14e0a6d5f65add50ae5d6056951bd1e909f8ca4ee162bdf3851ce", kill_on_drop: false }`
[INFO] [stdout] c3b5b18ceac14e0a6d5f65add50ae5d6056951bd1e909f8ca4ee162bdf3851ce