[INFO] fetching crate block_allocator 0.2.2...
[INFO] checking block_allocator-0.2.2 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate block_allocator 0.2.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate block_allocator 0.2.2 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate block_allocator 0.2.2
[INFO] finished tweaking crates.io crate block_allocator 0.2.2
[INFO] tweaked toml for crates.io crate block_allocator 0.2.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0281dd7033def0a2821ad566c028820a7a4f44a64d0ab0913271c8e89e987d5c
[INFO] running `Command { std: "docker" "start" "-a" "0281dd7033def0a2821ad566c028820a7a4f44a64d0ab0913271c8e89e987d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0281dd7033def0a2821ad566c028820a7a4f44a64d0ab0913271c8e89e987d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0281dd7033def0a2821ad566c028820a7a4f44a64d0ab0913271c8e89e987d5c", kill_on_drop: false }`
[INFO] [stdout] 0281dd7033def0a2821ad566c028820a7a4f44a64d0ab0913271c8e89e987d5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c3f3723d96811366578abd82278b3940f4d21bbd7fb857a4e354ad9861bde82
[INFO] running `Command { std: "docker" "start" "-a" "0c3f3723d96811366578abd82278b3940f4d21bbd7fb857a4e354ad9861bde82", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]     Checking block_allocator v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/block_allocator.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 | const PAGE_SIZE : u32 = (1 << 12);
[INFO] [stdout]    |                         ^       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 - const PAGE_SIZE : u32 = (1 << 12);
[INFO] [stdout] 19 + const PAGE_SIZE : u32 = 1 << 12;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/block_allocator.rs:250:32
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn cause(&self) -> Option<&Error> { 
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/block_allocator.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 | const PAGE_SIZE : u32 = (1 << 12);
[INFO] [stdout]    |                         ^       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 - const PAGE_SIZE : u32 = (1 << 12);
[INFO] [stdout] 19 + const PAGE_SIZE : u32 = 1 << 12;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/block_allocator.rs:250:32
[INFO] [stdout]     |
[INFO] [stdout] 250 |     fn cause(&self) -> Option<&Error> { 
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/block_allocator.rs:135:28
[INFO] [stdout]     |
[INFO] [stdout] 135 |             hd = self.head.compare_and_swap(hd, mem::transmute(newhd_ary), Ordering::SeqCst);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/block_allocator.rs:183:28
[INFO] [stdout]     |
[INFO] [stdout] 183 |             hd = self.head.compare_and_swap(hd, mem::transmute(newhd_ary), Ordering::SeqCst);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/block_allocator.rs:135:28
[INFO] [stdout]     |
[INFO] [stdout] 135 |             hd = self.head.compare_and_swap(hd, mem::transmute(newhd_ary), Ordering::SeqCst);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/block_allocator.rs:183:28
[INFO] [stdout]     |
[INFO] [stdout] 183 |             hd = self.head.compare_and_swap(hd, mem::transmute(newhd_ary), Ordering::SeqCst);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.66s
[INFO] running `Command { std: "docker" "inspect" "0c3f3723d96811366578abd82278b3940f4d21bbd7fb857a4e354ad9861bde82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c3f3723d96811366578abd82278b3940f4d21bbd7fb857a4e354ad9861bde82", kill_on_drop: false }`
[INFO] [stdout] 0c3f3723d96811366578abd82278b3940f4d21bbd7fb857a4e354ad9861bde82