[INFO] cloning repository https://github.com/dinternet-computer/rust_hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dinternet-computer/rust_hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinternet-computer%2Frust_hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinternet-computer%2Frust_hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec119217fb8244a9bdff2806d37aa4dda18e76dd
[INFO] documenting dinternet-computer/rust_hello 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%2Fdinternet-computer%2Frust_hello" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dinternet-computer/rust_hello 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/dinternet-computer/rust_hello
[INFO] finished tweaking git repo https://github.com/dinternet-computer/rust_hello
[INFO] tweaked toml for git repo https://github.com/dinternet-computer/rust_hello written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dinternet-computer/rust_hello 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 317e35fbe6947590786a8014a1459a8f57454ece239e562a0179d64794ef6d94
[INFO] running `Command { std: "docker" "start" "-a" "317e35fbe6947590786a8014a1459a8f57454ece239e562a0179d64794ef6d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "317e35fbe6947590786a8014a1459a8f57454ece239e562a0179d64794ef6d94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "317e35fbe6947590786a8014a1459a8f57454ece239e562a0179d64794ef6d94", kill_on_drop: false }`
[INFO] [stdout] 317e35fbe6947590786a8014a1459a8f57454ece239e562a0179d64794ef6d94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8a45d0870fafa5337b98c1e072eb771de9e398647facdb046dcc5474f35fe1a
[INFO] running `Command { std: "docker" "start" "-a" "d8a45d0870fafa5337b98c1e072eb771de9e398647facdb046dcc5474f35fe1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling log v0.4.15
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling diff v0.1.12
[INFO] [stderr]    Compiling pico-args v0.4.2
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]     Checking pretty v0.10.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]     Checking git-hash v0.9.2
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking anyhow v1.0.56
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking git-packetline v0.12.3
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling lalrpop-util v0.19.7
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling ena v0.14.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking fscommon v0.1.1
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling string_cache v0.8.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling ascii-canvas v3.0.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking fatfs v0.4.0 (https://github.com/rafalh/rust-fatfs?rev=87fc1ed5074a32b4e0344fcdde77359ef9e75432#87fc1ed5)
[INFO] [stderr]    Compiling lalrpop v0.19.7
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling binread_derive v2.1.0
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling candid_derive v0.4.5
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]     Checking binread v2.2.0
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking ic-types v0.3.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_tokenstream v0.1.3
[INFO] [stderr]    Compiling proc-macro-crate v1.1.3
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]    Compiling candid v0.7.12
[INFO] [stderr]     Checking num_enum v0.5.7
[INFO] [stderr]     Checking ic-cdk v0.5.0
[INFO] [stderr]     Checking ic-cdk v0.4.0 (https://github.com/dfinity/cdk-rs.git?rev=a253119adb08929b6304d007ee0a6a37960656ed#a253119a)
[INFO] [stderr]     Checking icfs_fatfs v0.1.0 (/opt/rustwide/workdir/src/icfs_fatfs)
[INFO] [stderr]  Documenting icfs_fatfs v0.1.0 (/opt/rustwide/workdir/src/icfs_fatfs)
[INFO] [stderr]     Checking icfs v0.1.0 (https://github.com/paulyoung/icfs.git#897e5a99)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/icfs-e1dda36b6ee299ad/897e5a9/crates/icfs/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(read_buf)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/icfs-e1dda36b6ee299ad/897e5a9/crates/icfs/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(result_flattening)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[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 compile `icfs` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d8a45d0870fafa5337b98c1e072eb771de9e398647facdb046dcc5474f35fe1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a45d0870fafa5337b98c1e072eb771de9e398647facdb046dcc5474f35fe1a", kill_on_drop: false }`
[INFO] [stdout] d8a45d0870fafa5337b98c1e072eb771de9e398647facdb046dcc5474f35fe1a