[INFO] fetching crate mma7660fc 0.1.2...
[INFO] testing mma7660fc-0.1.2 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate mma7660fc 0.1.2 into /workspace/builds/worker-32/source
[INFO] validating manifest of crates.io crate mma7660fc 0.1.2 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-32/source/.cargo/config
[INFO] started tweaking crates.io crate mma7660fc 0.1.2
[INFO] finished tweaking crates.io crate mma7660fc 0.1.2
[INFO] tweaked toml for crates.io crate mma7660fc 0.1.2 written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linux-embedded-hal v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 073163e109b15c303e07826540cedc6ee13ad39a7bbfbb8a9803908b3cfb36a8
[INFO] running `Command { std: "docker" "start" "-a" "073163e109b15c303e07826540cedc6ee13ad39a7bbfbb8a9803908b3cfb36a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "073163e109b15c303e07826540cedc6ee13ad39a7bbfbb8a9803908b3cfb36a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073163e109b15c303e07826540cedc6ee13ad39a7bbfbb8a9803908b3cfb36a8", kill_on_drop: false }`
[INFO] [stdout] 073163e109b15c303e07826540cedc6ee13ad39a7bbfbb8a9803908b3cfb36a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6a18541fe9491d560f78b2e336a0cdd3f93d75af5f8f4fea051758dba5b1a96
[INFO] running `Command { std: "docker" "start" "-a" "a6a18541fe9491d560f78b2e336a0cdd3f93d75af5f8f4fea051758dba5b1a96", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.6
[INFO] [stderr]    Compiling embedded-hal v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling mma7660fc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:177:49
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let mut buffer: [u8; 3] = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:60:9
[INFO] [stdout]     |
[INFO] [stdout] 60  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the feature `pattern_parentheses` has been stable since 1.31.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 | #![feature(pattern_parentheses)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(stable_features)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mma7660fc` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "a6a18541fe9491d560f78b2e336a0cdd3f93d75af5f8f4fea051758dba5b1a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a18541fe9491d560f78b2e336a0cdd3f93d75af5f8f4fea051758dba5b1a96", kill_on_drop: false }`
[INFO] [stdout] a6a18541fe9491d560f78b2e336a0cdd3f93d75af5f8f4fea051758dba5b1a96