[INFO] cloning repository https://github.com/Edgeworth/mhrono
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Edgeworth/mhrono" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdgeworth%2Fmhrono", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdgeworth%2Fmhrono'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 212fe1c8908fef5c4cedc151b81e72669fa737ef
[INFO] documenting Edgeworth/mhrono against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEdgeworth%2Fmhrono" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Edgeworth/mhrono on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Edgeworth/mhrono
[INFO] finished tweaking git repo https://github.com/Edgeworth/mhrono
[INFO] tweaked toml for git repo https://github.com/Edgeworth/mhrono written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Edgeworth/mhrono already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", 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] 6c89569e71316ec3766ff929130b43166f9d535b5eec55df4bcfb81236bd14a2
[INFO] running `Command { std: "docker" "start" "-a" "6c89569e71316ec3766ff929130b43166f9d535b5eec55df4bcfb81236bd14a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c89569e71316ec3766ff929130b43166f9d535b5eec55df4bcfb81236bd14a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c89569e71316ec3766ff929130b43166f9d535b5eec55df4bcfb81236bd14a2", kill_on_drop: false }`
[INFO] [stdout] 6c89569e71316ec3766ff929130b43166f9d535b5eec55df4bcfb81236bd14a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5047de40f753b58dffb9c577ef0155020ef77a463e2b6b84ac166ee436ff7dd8
[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" "5047de40f753b58dffb9c577ef0155020ef77a463e2b6b84ac166ee436ff7dd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling rust_decimal v1.23.1
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking once_cell v1.11.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling uncased v0.9.7
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]    Compiling chrono-tz-build v0.0.2
[INFO] [stderr]    Compiling chrono-tz v0.6.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling rust_decimal_macros v1.23.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]  Documenting mhrono v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:39:1
[INFO] [stdout]    |
[INFO] [stdout] 39 | #![feature(once_cell, trait_alias)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 document `mhrono`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name mhrono src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f9ad430cec084988 -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-c012689e89ac1949.rmeta --extern chrono_tz=/opt/rustwide/target/debug/deps/libchrono_tz-f8ae0e7eaef6ee6f.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-6ee8bbd95bd3d504.so --extern eyre=/opt/rustwide/target/debug/deps/libeyre-dc5b1eae80996218.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-19f26c7661f9c285.so --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-c044e835dd621079.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2d27c8d9e3cc560d.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-8a4a259da1536bc3.rmeta --extern rust_decimal=/opt/rustwide/target/debug/deps/librust_decimal-1e68576124210a67.rmeta --extern rust_decimal_macros=/opt/rustwide/target/debug/deps/librust_decimal_macros-63081dca4afcd3ca.so --extern serde=/opt/rustwide/target/debug/deps/libserde-87d4488aad58aa72.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5047de40f753b58dffb9c577ef0155020ef77a463e2b6b84ac166ee436ff7dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5047de40f753b58dffb9c577ef0155020ef77a463e2b6b84ac166ee436ff7dd8", kill_on_drop: false }`
[INFO] [stdout] 5047de40f753b58dffb9c577ef0155020ef77a463e2b6b84ac166ee436ff7dd8