[INFO] fetching crate sized_matrix 0.2.2...
[INFO] checking sized_matrix-0.2.2 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate sized_matrix 0.2.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate sized_matrix 0.2.2 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sized_matrix 0.2.2
[INFO] finished tweaking crates.io crate sized_matrix 0.2.2
[INFO] tweaked toml for crates.io crate sized_matrix 0.2.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bdccbe9f44cad6c8677de8bed9724de49bf2dc69274366495d33e7caf2c7b01d
[INFO] running `Command { std: "docker" "start" "-a" "bdccbe9f44cad6c8677de8bed9724de49bf2dc69274366495d33e7caf2c7b01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdccbe9f44cad6c8677de8bed9724de49bf2dc69274366495d33e7caf2c7b01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdccbe9f44cad6c8677de8bed9724de49bf2dc69274366495d33e7caf2c7b01d", kill_on_drop: false }`
[INFO] [stdout] bdccbe9f44cad6c8677de8bed9724de49bf2dc69274366495d33e7caf2c7b01d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07ce918fce0300b26b7ecfe022c8b6fcc75640edefc6ac9168b9c4c72f2d73a7
[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" "07ce918fce0300b26b7ecfe022c8b6fcc75640edefc6ac9168b9c4c72f2d73a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling pulldown-cmark v0.7.2
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking semver-parser v0.9.0
[INFO] [stderr]     Checking higher_order_functions v0.1.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[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" "07ce918fce0300b26b7ecfe022c8b6fcc75640edefc6ac9168b9c4c72f2d73a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07ce918fce0300b26b7ecfe022c8b6fcc75640edefc6ac9168b9c4c72f2d73a7", kill_on_drop: false }`
[INFO] [stdout] 07ce918fce0300b26b7ecfe022c8b6fcc75640edefc6ac9168b9c4c72f2d73a7