[INFO] fetching crate sized_matrix 0.2.3...
[INFO] checking sized_matrix-0.2.3 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate sized_matrix 0.2.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate sized_matrix 0.2.3 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sized_matrix 0.2.3
[INFO] finished tweaking crates.io crate sized_matrix 0.2.3
[INFO] tweaked toml for crates.io crate sized_matrix 0.2.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded higher_order_functions v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93c8bc48e7dacdfee65cbe4d7d180a71e1dfabc1b1df40c645be38d564801a16
[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" "93c8bc48e7dacdfee65cbe4d7d180a71e1dfabc1b1df40c645be38d564801a16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93c8bc48e7dacdfee65cbe4d7d180a71e1dfabc1b1df40c645be38d564801a16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93c8bc48e7dacdfee65cbe4d7d180a71e1dfabc1b1df40c645be38d564801a16", kill_on_drop: false }`
[INFO] [stdout] 93c8bc48e7dacdfee65cbe4d7d180a71e1dfabc1b1df40c645be38d564801a16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adc20faf3ed6025ef0de28ad1b6f14581289a6e06222262119bca577c3382d1a
[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" "adc20faf3ed6025ef0de28ad1b6f14581289a6e06222262119bca577c3382d1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking higher_order_functions v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<TFrom>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/higher_order_functions-0.1.1/src/map.rs:50:45
[INFO] [stdout]    |
[INFO] [stdout] 50 |             contents[i].write(f(unsafe { consumed[i].read() }));
[INFO] [stdout]    |                                                      ^^^^ method not found in `MaybeUninit<TFrom>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<TLhs>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/higher_order_functions-0.1.1/src/zip.rs:60:49
[INFO] [stdout]    |
[INFO] [stdout] 60 |             contents[i].write(f(unsafe { consumed_lhs[i].read() }, unsafe { consumed_rhs[i].read() }));
[INFO] [stdout]    |                                                          ^^^^ method not found in `MaybeUninit<TLhs>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `read` found for union `MaybeUninit<TRhs>` in the current scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/higher_order_functions-0.1.1/src/zip.rs:60:84
[INFO] [stdout]    |
[INFO] [stdout] 60 |             contents[i].write(f(unsafe { consumed_lhs[i].read() }, unsafe { consumed_rhs[i].read() }));
[INFO] [stdout]    |                                                                                             ^^^^ method not found in `MaybeUninit<TRhs>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `higher_order_functions`
[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" "adc20faf3ed6025ef0de28ad1b6f14581289a6e06222262119bca577c3382d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adc20faf3ed6025ef0de28ad1b6f14581289a6e06222262119bca577c3382d1a", kill_on_drop: false }`
[INFO] [stdout] adc20faf3ed6025ef0de28ad1b6f14581289a6e06222262119bca577c3382d1a