[INFO] fetching crate const-buffer 0.1.1...
[INFO] checking const-buffer-0.1.1 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate const-buffer 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate const-buffer 0.1.1 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate const-buffer 0.1.1
[INFO] finished tweaking crates.io crate const-buffer 0.1.1
[INFO] tweaked toml for crates.io crate const-buffer 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0f4ecca2cf5ae239374fb7c2e88c499eecc5922925d74a456f121bead57ac22
[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" "c0f4ecca2cf5ae239374fb7c2e88c499eecc5922925d74a456f121bead57ac22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0f4ecca2cf5ae239374fb7c2e88c499eecc5922925d74a456f121bead57ac22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0f4ecca2cf5ae239374fb7c2e88c499eecc5922925d74a456f121bead57ac22", kill_on_drop: false }`
[INFO] [stdout] c0f4ecca2cf5ae239374fb7c2e88c499eecc5922925d74a456f121bead57ac22
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 453b864d6306a56d35cf39a8e92b143a9c7dcfd6bbc4d1907684b083cc0f7455
[INFO] running `Command { std: "docker" "start" "-a" "453b864d6306a56d35cf39a8e92b143a9c7dcfd6bbc4d1907684b083cc0f7455", kill_on_drop: false }`
[INFO] [stderr]     Checking const-buffer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `read` found for reference `&MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:257:37
[INFO] [stdout]     |
[INFO] [stdout] 257 |         self.0.get_unchecked(index).read()
[INFO] [stdout]     |                                     ^^^^ method not found in `&MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get_ref` found for reference `&MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:889:14
[INFO] [stdout]     |
[INFO] [stdout] 889 |         self.get_ref()
[INFO] [stdout]     |              ^^^^^^^ method not found in `&MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `slice_get_ref` found for union `MaybeUninit<_>` in the current scope
[INFO] [stdout]    --> src/lib.rs:901:22
[INFO] [stdout]     |
[INFO] [stdout] 901 |         MaybeUninit::slice_get_ref(self)
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `slice_get_mut` found for union `MaybeUninit<_>` in the current scope
[INFO] [stdout]    --> src/lib.rs:905:22
[INFO] [stdout]     |
[INFO] [stdout] 905 |         MaybeUninit::slice_get_mut(self)
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `const-buffer`
[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[E0599]: no method named `read` found for reference `&MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:257:37
[INFO] [stdout]     |
[INFO] [stdout] 257 |         self.0.get_unchecked(index).read()
[INFO] [stdout]     |                                     ^^^^ method not found in `&MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get_ref` found for reference `&MaybeUninit<T>` in the current scope
[INFO] [stdout]    --> src/lib.rs:889:14
[INFO] [stdout]     |
[INFO] [stdout] 889 |         self.get_ref()
[INFO] [stdout]     |              ^^^^^^^ method not found in `&MaybeUninit<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `slice_get_ref` found for union `MaybeUninit<_>` in the current scope
[INFO] [stdout]    --> src/lib.rs:901:22
[INFO] [stdout]     |
[INFO] [stdout] 901 |         MaybeUninit::slice_get_ref(self)
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `slice_get_mut` found for union `MaybeUninit<_>` in the current scope
[INFO] [stdout]    --> src/lib.rs:905:22
[INFO] [stdout]     |
[INFO] [stdout] 905 |         MaybeUninit::slice_get_mut(self)
[INFO] [stdout]     |                      ^^^^^^^^^^^^^ function or associated item not found in `MaybeUninit<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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" "453b864d6306a56d35cf39a8e92b143a9c7dcfd6bbc4d1907684b083cc0f7455", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "453b864d6306a56d35cf39a8e92b143a9c7dcfd6bbc4d1907684b083cc0f7455", kill_on_drop: false }`
[INFO] [stdout] 453b864d6306a56d35cf39a8e92b143a9c7dcfd6bbc4d1907684b083cc0f7455