[INFO] cloning repository https://github.com/shusvr/covert
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shusvr/covert" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshusvr%2Fcovert", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshusvr%2Fcovert'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9998ef5b50bf8904a15f29b135f0f995b696e335
[INFO] checking shusvr/covert against 1.94.0 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshusvr%2Fcovert" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shusvr/covert
[INFO] finished tweaking git repo https://github.com/shusvr/covert
[INFO] tweaked toml for git repo https://github.com/shusvr/covert written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shusvr/covert on toolchain 1.94.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shusvr/covert already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.94.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded toml_writer v1.0.7+spec-1.1.0
[INFO] [stderr]   Downloaded etherparse v0.19.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25a19d7daae7756ab5b91d5e02073112f118dd52396789541824c555a480e5c4
[INFO] running `Command { std: "docker" "start" "-a" "25a19d7daae7756ab5b91d5e02073112f118dd52396789541824c555a480e5c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25a19d7daae7756ab5b91d5e02073112f118dd52396789541824c555a480e5c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a19d7daae7756ab5b91d5e02073112f118dd52396789541824c555a480e5c4", kill_on_drop: false }`
[INFO] [stdout] 25a19d7daae7756ab5b91d5e02073112f118dd52396789541824c555a480e5c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.94.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 516b05a13c583bdf9517f8e68a0ff6116204a378efa671b0cb7cb438b3d69d7b
[INFO] running `Command { std: "docker" "start" "-a" "516b05a13c583bdf9517f8e68a0ff6116204a378efa671b0cb7cb438b3d69d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]     Checking winnow v1.0.0
[INFO] [stderr]     Checking toml_writer v1.0.7+spec-1.1.0
[INFO] [stderr]     Checking etherparse v0.19.0
[INFO] [stderr]     Checking toml_datetime v1.0.1+spec-1.1.0
[INFO] [stderr]     Checking toml_parser v1.0.10+spec-1.1.0
[INFO] [stderr]     Checking toml v1.0.7+spec-1.1.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking socket2 v0.6.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking covert v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `as_mut` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]   --> src/main.rs:72:28
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .recv_from(buf.as_mut())
[INFO] [stdout]    |                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: if this `MaybeUninit<[u8; 1500]>` has been initialized, use one of the `assume_init` methods to access the inner value
[INFO] [stdout] note: the method `as_mut` exists on the type `[u8; 1500]`
[INFO] [stdout]   --> /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/convert/mod.rs:375:4
[INFO] [stdout] help: there is a method `as_mut_ptr` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .recv_from(buf.as_mut_ptr())
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `as_mut` found for union `MaybeUninit<T>` in the current scope
[INFO] [stdout]   --> src/main.rs:72:28
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .recv_from(buf.as_mut())
[INFO] [stdout]    |                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: if this `MaybeUninit<[u8; 1500]>` has been initialized, use one of the `assume_init` methods to access the inner value
[INFO] [stdout] note: the method `as_mut` exists on the type `[u8; 1500]`
[INFO] [stdout]   --> /rustc/4a4ef493e3a1488c6e321570238084b38948f6db/library/core/src/convert/mod.rs:375:4
[INFO] [stdout] help: there is a method `as_mut_ptr` with a similar name
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .recv_from(buf.as_mut_ptr())
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `covert` (bin "covert" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `covert` (bin "covert") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "516b05a13c583bdf9517f8e68a0ff6116204a378efa671b0cb7cb438b3d69d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516b05a13c583bdf9517f8e68a0ff6116204a378efa671b0cb7cb438b3d69d7b", kill_on_drop: false }`
[INFO] [stdout] 516b05a13c583bdf9517f8e68a0ff6116204a378efa671b0cb7cb438b3d69d7b