[INFO] fetching crate arccstr 1.3.1...
[INFO] checking arccstr-1.3.1 against master#368e2fd458a22d0cc133d0c254f2612ee999744f for pr-128351
[INFO] extracting crate arccstr 1.3.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate arccstr 1.3.1 on toolchain 368e2fd458a22d0cc133d0c254f2612ee999744f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arccstr 1.3.1
[INFO] finished tweaking crates.io crate arccstr 1.3.1
[INFO] tweaked toml for crates.io crate arccstr 1.3.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_test v1.0.176
[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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a1b168cdc12e4f952f8fa9fd198d22040612ee41e29a4abab630a71fc95fe9d
[INFO] running `Command { std: "docker" "start" "-a" "1a1b168cdc12e4f952f8fa9fd198d22040612ee41e29a4abab630a71fc95fe9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a1b168cdc12e4f952f8fa9fd198d22040612ee41e29a4abab630a71fc95fe9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a1b168cdc12e4f952f8fa9fd198d22040612ee41e29a4abab630a71fc95fe9d", kill_on_drop: false }`
[INFO] [stdout] 1a1b168cdc12e4f952f8fa9fd198d22040612ee41e29a4abab630a71fc95fe9d
[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=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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+368e2fd458a22d0cc133d0c254f2612ee999744f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67bee4cf5ecdeb516cd508c0032baf96076367329d64987d38e7cf6e2a5e97b1
[INFO] running `Command { std: "docker" "start" "-a" "67bee4cf5ecdeb516cd508c0032baf96076367329d64987d38e7cf6e2a5e97b1", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking serde_test v1.0.176
[INFO] [stderr]     Checking arccstr v1.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.121
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "67bee4cf5ecdeb516cd508c0032baf96076367329d64987d38e7cf6e2a5e97b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67bee4cf5ecdeb516cd508c0032baf96076367329d64987d38e7cf6e2a5e97b1", kill_on_drop: false }`
[INFO] [stdout] 67bee4cf5ecdeb516cd508c0032baf96076367329d64987d38e7cf6e2a5e97b1
[INFO] checking arccstr-1.3.1 against try#09146510cdb33d15474a35fde290187a88b1cf35 for pr-128351
[INFO] extracting crate arccstr 1.3.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate arccstr 1.3.1 on toolchain 09146510cdb33d15474a35fde290187a88b1cf35
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arccstr 1.3.1
[INFO] finished tweaking crates.io crate arccstr 1.3.1
[INFO] tweaked toml for crates.io crate arccstr 1.3.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ebde90348e33885eb0b126811323beedb1e52ddf191fb7ec9b442ee9001870b
[INFO] running `Command { std: "docker" "start" "-a" "4ebde90348e33885eb0b126811323beedb1e52ddf191fb7ec9b442ee9001870b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ebde90348e33885eb0b126811323beedb1e52ddf191fb7ec9b442ee9001870b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ebde90348e33885eb0b126811323beedb1e52ddf191fb7ec9b442ee9001870b", kill_on_drop: false }`
[INFO] [stdout] 4ebde90348e33885eb0b126811323beedb1e52ddf191fb7ec9b442ee9001870b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+09146510cdb33d15474a35fde290187a88b1cf35" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be0bddf174e592216bd49a90c0ffe1fd4fd9def1c2756570ebae1a3f2615b2c8
[INFO] running `Command { std: "docker" "start" "-a" "be0bddf174e592216bd49a90c0ffe1fd4fd9def1c2756570ebae1a3f2615b2c8", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking serde_test v1.0.176
[INFO] [stderr]     Checking arccstr v1.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: casting `&T` to `&UnsafeCell<T>` is undefined behavior, even if the reference is unused, consider using an `UnsafeCell` on the original data
[INFO] [stdout]    --> src/lib.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             &*(self.ptr.as_ptr().as_ref().unwrap() as *const _ as *const _)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cast from `u8` to `AtomicUsize.v`
[INFO] [stdout]     = note: `#[deny(unsafe_cell_reference_casting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arccstr` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "be0bddf174e592216bd49a90c0ffe1fd4fd9def1c2756570ebae1a3f2615b2c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be0bddf174e592216bd49a90c0ffe1fd4fd9def1c2756570ebae1a3f2615b2c8", kill_on_drop: false }`
[INFO] [stdout] be0bddf174e592216bd49a90c0ffe1fd4fd9def1c2756570ebae1a3f2615b2c8