[INFO] fetching crate async-ringbuffer 0.5.5...
[INFO] checking async-ringbuffer-0.5.5 against try#7b3565da729099dbe807466fcd118fb2815986e0 for pr-81789
[INFO] extracting crate async-ringbuffer 0.5.5 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate async-ringbuffer 0.5.5 on toolchain 7b3565da729099dbe807466fcd118fb2815986e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-ringbuffer 0.5.5
[INFO] finished tweaking crates.io crate async-ringbuffer 0.5.5
[INFO] tweaked toml for crates.io crate async-ringbuffer 0.5.5 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bc64febc5c7c44f71e3399e5375ec7466278fc08ead7a100d628d0e913c0c7e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5bc64febc5c7c44f71e3399e5375ec7466278fc08ead7a100d628d0e913c0c7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bc64febc5c7c44f71e3399e5375ec7466278fc08ead7a100d628d0e913c0c7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc64febc5c7c44f71e3399e5375ec7466278fc08ead7a100d628d0e913c0c7e", kill_on_drop: false }`
[INFO] [stdout] 5bc64febc5c7c44f71e3399e5375ec7466278fc08ead7a100d628d0e913c0c7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7b3565da729099dbe807466fcd118fb2815986e0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52176e86a46694c2a9d3e3c1462ec6eb02feb6c84d41322c7126af81b395ed9d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "52176e86a46694c2a9d3e3c1462ec6eb02feb6c84d41322c7126af81b395ed9d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking async-ringbuffer v0.5.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stdout] error: casting pointer to `isize`
[INFO] [stdout]   --> src/lib.rs:63:16
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let diff = (x as isize).wrapping_sub(other as isize);
[INFO] [stdout]    |                ^^^^^^^^^^^^ help: to cast to `isize`, cast to `usize` first: `x as usize as isize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(invalid_ptr_to_int_cast)]` on by default
[INFO] [stdout]    = help: pointers should only be cast to `usize` or `u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting pointer to `isize`
[INFO] [stdout]   --> src/lib.rs:63:42
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let diff = (x as isize).wrapping_sub(other as isize);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^ help: to cast to `isize`, cast to `usize` first: `other as usize as isize`
[INFO] [stdout]    |
[INFO] [stdout]    = help: pointers should only be cast to `usize` or `u64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-ringbuffer`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "52176e86a46694c2a9d3e3c1462ec6eb02feb6c84d41322c7126af81b395ed9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52176e86a46694c2a9d3e3c1462ec6eb02feb6c84d41322c7126af81b395ed9d", kill_on_drop: false }`
[INFO] [stdout] 52176e86a46694c2a9d3e3c1462ec6eb02feb6c84d41322c7126af81b395ed9d