[INFO] fetching crate core-serde-json 0.1.0...
[INFO] checking core-serde-json-0.1.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate core-serde-json 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate core-serde-json 0.1.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate core-serde-json 0.1.0
[INFO] finished tweaking crates.io crate core-serde-json 0.1.0
[INFO] tweaked toml for crates.io crate core-serde-json 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding as-slice v0.1.5 (latest: v0.2.1)
[INFO] [stderr]       Adding generic-array v0.12.4 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.13.3 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hash32 v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.5.6 (latest: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded heapless v0.5.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f176778e4e5c716365ac506bb768b6685709fddfea145c86b57e80bf11ccef79
[INFO] running `Command { std: "docker" "start" "-a" "f176778e4e5c716365ac506bb768b6685709fddfea145c86b57e80bf11ccef79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f176778e4e5c716365ac506bb768b6685709fddfea145c86b57e80bf11ccef79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f176778e4e5c716365ac506bb768b6685709fddfea145c86b57e80bf11ccef79", kill_on_drop: false }`
[INFO] [stdout] f176778e4e5c716365ac506bb768b6685709fddfea145c86b57e80bf11ccef79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7469592b8bc54704987103019238f10da60974383e10273af4d41783377ef6ea
[INFO] running `Command { std: "docker" "start" "-a" "7469592b8bc54704987103019238f10da60974383e10273af4d41783377ef6ea", kill_on_drop: false }`
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking core-serde-json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the type `[u8; 4]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 152 |         serialize_signed!(self, 4, v, i8, u8)
[INFO] [stdout]     |         ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:59:9
[INFO] [stdout]     |
[INFO] [stdout] 59  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(invalid_value)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 6]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 157 |         serialize_signed!(self, 6, v, i16, u16)
[INFO] [stdout]     |         --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 11]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 162 |         serialize_signed!(self, 11, v, i32, u32)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 167 |         serialize_signed!(self, 20, v, i64, u64)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 3]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 172 |         serialize_unsigned!(self, 3, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 5]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 177 |         serialize_unsigned!(self, 5, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 10]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 182 |         serialize_unsigned!(self, 10, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 187 |         serialize_unsigned!(self, 20, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core-serde-json` (lib) due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: the type `[u8; 4]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 152 |         serialize_signed!(self, 4, v, i8, u8)
[INFO] [stdout]     |         ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:59:9
[INFO] [stdout]     |
[INFO] [stdout] 59  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(invalid_value)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 6]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 157 |         serialize_signed!(self, 6, v, i16, u16)
[INFO] [stdout]     |         --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 11]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 162 |         serialize_signed!(self, 11, v, i32, u32)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 167 |         serialize_signed!(self, 20, v, i64, u64)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 3]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 172 |         serialize_unsigned!(self, 3, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 5]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 177 |         serialize_unsigned!(self, 5, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 10]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 182 |         serialize_unsigned!(self, 10, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 187 |         serialize_unsigned!(self, 20, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core-serde-json` (lib test) due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "7469592b8bc54704987103019238f10da60974383e10273af4d41783377ef6ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7469592b8bc54704987103019238f10da60974383e10273af4d41783377ef6ea", kill_on_drop: false }`
[INFO] [stdout] 7469592b8bc54704987103019238f10da60974383e10273af4d41783377ef6ea
[INFO] checking core-serde-json-0.1.0 against try#9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88 for pr-124157
[INFO] extracting crate core-serde-json 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate core-serde-json 0.1.0 on toolchain 9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate core-serde-json 0.1.0
[INFO] finished tweaking crates.io crate core-serde-json 0.1.0
[INFO] tweaked toml for crates.io crate core-serde-json 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding as-slice v0.1.5 (latest: v0.2.1)
[INFO] [stderr]       Adding generic-array v0.12.4 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.13.3 (latest: v1.0.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hash32 v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding heapless v0.5.6 (latest: v0.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 119d874e12b5263ff2219e77486ab7fd906cb8c9f8ee7bfc11861b855f7d7a03
[INFO] running `Command { std: "docker" "start" "-a" "119d874e12b5263ff2219e77486ab7fd906cb8c9f8ee7bfc11861b855f7d7a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "119d874e12b5263ff2219e77486ab7fd906cb8c9f8ee7bfc11861b855f7d7a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119d874e12b5263ff2219e77486ab7fd906cb8c9f8ee7bfc11861b855f7d7a03", kill_on_drop: false }`
[INFO] [stdout] 119d874e12b5263ff2219e77486ab7fd906cb8c9f8ee7bfc11861b855f7d7a03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9c7b5f5b6b8ec32bbbcf9f07fc0e5208da6c5f88" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b454b95d9c9f196d508afb06c8be09459a83bbabb1a39a1641eff060b6977c5d
[INFO] running `Command { std: "docker" "start" "-a" "b454b95d9c9f196d508afb06c8be09459a83bbabb1a39a1641eff060b6977c5d", kill_on_drop: false }`
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling serde v1.0.200
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking as-slice v0.1.5
[INFO] [stderr]     Checking core-serde-json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the type `[u8; 4]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 152 |         serialize_signed!(self, 4, v, i8, u8)
[INFO] [stdout]     |         ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:59:9
[INFO] [stdout]     |
[INFO] [stdout] 59  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(invalid_value)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 6]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 157 |         serialize_signed!(self, 6, v, i16, u16)
[INFO] [stdout]     |         --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 11]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 162 |         serialize_signed!(self, 11, v, i32, u32)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 167 |         serialize_signed!(self, 20, v, i64, u64)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 3]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 172 |         serialize_unsigned!(self, 3, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 5]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 177 |         serialize_unsigned!(self, 5, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 10]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 182 |         serialize_unsigned!(self, 10, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 187 |         serialize_unsigned!(self, 20, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core-serde-json` (lib) due to 9 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: the type `[u8; 4]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 152 |         serialize_signed!(self, 4, v, i8, u8)
[INFO] [stdout]     |         ------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:59:9
[INFO] [stdout]     |
[INFO] [stdout] 59  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(invalid_value)]` implied by `#[deny(warnings)]`
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 6]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 157 |         serialize_signed!(self, 6, v, i16, u16)
[INFO] [stdout]     |         --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 11]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 162 |         serialize_signed!(self, 11, v, i32, u32)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:103:42
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 167 |         serialize_signed!(self, 20, v, i64, u64)
[INFO] [stdout]     |         ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 3]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 172 |         serialize_unsigned!(self, 3, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 5]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 177 |         serialize_unsigned!(self, 5, v)
[INFO] [stdout]     |         ------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 10]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 182 |         serialize_unsigned!(self, 10, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the type `[u8; 20]` does not permit being left uninitialized
[INFO] [stdout]    --> src/ser/mod.rs:72:42
[INFO] [stdout]     |
[INFO] [stdout] 72  |         let mut buf: [u8; $N] = unsafe { mem::MaybeUninit::uninit().assume_init() };
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          this code causes undefined behavior when executed
[INFO] [stdout]     |                                          help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
[INFO] [stdout] ...
[INFO] [stdout] 187 |         serialize_unsigned!(self, 20, v)
[INFO] [stdout]     |         -------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: integers must be initialized
[INFO] [stdout]     = note: this error originates in the macro `serialize_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `core-serde-json` (lib test) due to 9 previous errors
[INFO] running `Command { std: "docker" "inspect" "b454b95d9c9f196d508afb06c8be09459a83bbabb1a39a1641eff060b6977c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b454b95d9c9f196d508afb06c8be09459a83bbabb1a39a1641eff060b6977c5d", kill_on_drop: false }`
[INFO] [stdout] b454b95d9c9f196d508afb06c8be09459a83bbabb1a39a1641eff060b6977c5d
