[INFO] fetching crate eiz 0.3.0...
[INFO] checking eiz-0.3.0 against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] extracting crate eiz 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate eiz 0.3.0 on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate eiz 0.3.0
[INFO] finished tweaking crates.io crate eiz 0.3.0
[INFO] tweaked toml for crates.io crate eiz 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6aaef958f1dc9a3145562420a3ad28d4a1e0f38b8e86990721695f20779e8a9
[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" "f6aaef958f1dc9a3145562420a3ad28d4a1e0f38b8e86990721695f20779e8a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6aaef958f1dc9a3145562420a3ad28d4a1e0f38b8e86990721695f20779e8a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6aaef958f1dc9a3145562420a3ad28d4a1e0f38b8e86990721695f20779e8a9", kill_on_drop: false }`
[INFO] [stdout] f6aaef958f1dc9a3145562420a3ad28d4a1e0f38b8e86990721695f20779e8a9
[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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0567828fd72f91282071d94c9944a2739c964cc6a10b7ef3f8494ab5e91f45de
[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" "0567828fd72f91282071d94c9944a2739c964cc6a10b7ef3f8494ab5e91f45de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking eiz v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/rt_queue.rs:114:63
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 drop((*self.buf.offset(read_masked as isize)).read());
[INFO] [stdout]     |                                                               ^^^^ method not found in `MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/rt_queue.rs:114:63
[INFO] [stdout]     |
[INFO] [stdout] 114 |                 drop((*self.buf.offset(read_masked as isize)).read());
[INFO] [stdout]     |                                                               ^^^^ method not found in `MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/rt_queue.rs:154:74
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let result = unsafe { (*self.0.buf.offset(read_masked as isize)).read() };
[INFO] [stdout]     |                                                                          ^^^^ method not found in `MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/rt_queue.rs:154:74
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let result = unsafe { (*self.0.buf.offset(read_masked as isize)).read() };
[INFO] [stdout]     |                                                                          ^^^^ method not found in `MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eiz`
[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] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0567828fd72f91282071d94c9944a2739c964cc6a10b7ef3f8494ab5e91f45de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0567828fd72f91282071d94c9944a2739c964cc6a10b7ef3f8494ab5e91f45de", kill_on_drop: false }`
[INFO] [stdout] 0567828fd72f91282071d94c9944a2739c964cc6a10b7ef3f8494ab5e91f45de