[INFO] fetching crate irona 0.1.1...
[INFO] documenting irona-0.1.1 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate irona 0.1.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate irona 0.1.1 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate irona 0.1.1
[INFO] finished tweaking crates.io crate irona 0.1.1
[INFO] tweaked toml for crates.io crate irona 0.1.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate irona 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15c5db944dd303cddd5009cc1649f36a2f2b9e79516b6bd66a7601b5fffa6244
[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" "15c5db944dd303cddd5009cc1649f36a2f2b9e79516b6bd66a7601b5fffa6244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15c5db944dd303cddd5009cc1649f36a2f2b9e79516b6bd66a7601b5fffa6244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15c5db944dd303cddd5009cc1649f36a2f2b9e79516b6bd66a7601b5fffa6244", kill_on_drop: false }`
[INFO] [stdout] 15c5db944dd303cddd5009cc1649f36a2f2b9e79516b6bd66a7601b5fffa6244
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9d83961be51f7a96775e47d5618a8935e322372af97ccc2a69db278cac4e94e
[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" "a9d83961be51f7a96775e47d5618a8935e322372af97ccc2a69db278cac4e94e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]    Compiling packed_simd v0.3.3
[INFO] [stderr]     Checking subtle v2.2.2
[INFO] [stderr]     Checking data-encoding v2.2.0
[INFO] [stderr]     Checking half v1.4.1
[INFO] [stderr]     Checking route-recognizer v0.1.13
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling clear_on_drop v0.2.3
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/subtle-2.2.2/src/lib.rs:150:14
[INFO] [stdout]     |
[INFO] [stdout] 150 |     unsafe { asm!("" : "=r"(input) : "0"(input) ) }
[INFO] [stdout]     |              ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: replace with: `llvm_asm!`
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/subtle-2.2.2/src/lib.rs:12:34
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "nightly", feature(asm))]
[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/registry/src/github.com-1ecc6299db9ec823/subtle-2.2.2/src/lib.rs:13:34
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![cfg_attr(feature = "nightly", feature(external_doc))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking parking_lot_core v0.7.0
[INFO] [stdout] error: aborting due to 3 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 `subtle`.
[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" "a9d83961be51f7a96775e47d5618a8935e322372af97ccc2a69db278cac4e94e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d83961be51f7a96775e47d5618a8935e322372af97ccc2a69db278cac4e94e", kill_on_drop: false }`
[INFO] [stdout] a9d83961be51f7a96775e47d5618a8935e322372af97ccc2a69db278cac4e94e