[INFO] fetching crate microcrates-bytes 0.4.8...
[INFO] checking microcrates-bytes-0.4.8 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate microcrates-bytes 0.4.8 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate microcrates-bytes 0.4.8 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate microcrates-bytes 0.4.8
[INFO] finished tweaking crates.io crate microcrates-bytes 0.4.8
[INFO] tweaked toml for crates.io crate microcrates-bytes 0.4.8 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5fab087bcd170449620f40aaa7fba1b89639ade58d31873e172daffe83736ed
[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" "d5fab087bcd170449620f40aaa7fba1b89639ade58d31873e172daffe83736ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5fab087bcd170449620f40aaa7fba1b89639ade58d31873e172daffe83736ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5fab087bcd170449620f40aaa7fba1b89639ade58d31873e172daffe83736ed", kill_on_drop: false }`
[INFO] [stdout] d5fab087bcd170449620f40aaa7fba1b89639ade58d31873e172daffe83736ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df0abe7428812df2d8582ee432c5f161be621fd60c9337a8f5f70d75e33de347
[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" "df0abe7428812df2d8582ee432c5f161be621fd60c9337a8f5f70d75e33de347", kill_on_drop: false }`
[INFO] [stderr]     Checking microcrates-bytes v0.4.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_test v1.0.115
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:74:34
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "nightly", feature(alloc, read_initializer, try_from))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         try!(write!(fmt, "b\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 | #![deny(warnings, missing_docs, missing_debug_implementations)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 try!(write!(fmt, "\\n"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 try!(write!(fmt, "\\r"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:25:17
[INFO] [stdout]    |
[INFO] [stdout] 25 |                 try!(write!(fmt, "\\t"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |                 try!(write!(fmt, "\\{}", c as char));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:29:17
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 try!(write!(fmt, "\\0"));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 try!(write!(fmt, "{}", c as char));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 try!(write!(fmt, "\\x{:02x}", c));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/debug.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         try!(write!(fmt, "\""));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'core::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]     --> src/bytes.rs:1550:40
[INFO] [stdout]      |
[INFO] [stdout] 1550 |                 let mut inner: Inner = mem::uninitialized();
[INFO] [stdout]      |                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'core::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]     --> src/bytes.rs:1736:40
[INFO] [stdout]      |
[INFO] [stdout] 1736 |                 let mut inner: Inner = mem::uninitialized();
[INFO] [stdout]      |                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated item 'core::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]     --> src/bytes.rs:2012:36
[INFO] [stdout]      |
[INFO] [stdout] 2012 |             let mut inner: Inner = mem::uninitialized();
[INFO] [stdout]      |                                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `microcrates-bytes`.
[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" "df0abe7428812df2d8582ee432c5f161be621fd60c9337a8f5f70d75e33de347", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df0abe7428812df2d8582ee432c5f161be621fd60c9337a8f5f70d75e33de347", kill_on_drop: false }`
[INFO] [stdout] df0abe7428812df2d8582ee432c5f161be621fd60c9337a8f5f70d75e33de347
