[INFO] fetching crate otpauth-uri 1.0.2...
[INFO] documenting otpauth-uri-1.0.2 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate otpauth-uri 1.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate otpauth-uri 1.0.2 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate otpauth-uri 1.0.2
[INFO] finished tweaking crates.io crate otpauth-uri 1.0.2
[INFO] tweaked toml for crates.io crate otpauth-uri 1.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 392c666c7dd1d24e527600d0f4b6680603c48499a1e52ee84b9604bbec12d627
[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" "392c666c7dd1d24e527600d0f4b6680603c48499a1e52ee84b9604bbec12d627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "392c666c7dd1d24e527600d0f4b6680603c48499a1e52ee84b9604bbec12d627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "392c666c7dd1d24e527600d0f4b6680603c48499a1e52ee84b9604bbec12d627", kill_on_drop: false }`
[INFO] [stdout] 392c666c7dd1d24e527600d0f4b6680603c48499a1e52ee84b9604bbec12d627
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20267d9f40fb5d9d38f50f8bac10df6346aed0af5eb9d9e9b86036e705a60272
[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" "20267d9f40fb5d9d38f50f8bac10df6346aed0af5eb9d9e9b86036e705a60272", kill_on_drop: false }`
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking generic-array v0.9.0
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking digest v0.7.6
[INFO] [stderr]     Checking crypto-mac v0.6.2
[INFO] [stderr]     Checking hmac v0.6.3
[INFO] [stderr]     Checking sha-1 v0.7.0
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]  Documenting otpauth-uri v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(int_to_from_bytes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_from)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[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 document `otpauth-uri`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name otpauth_uri src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-128be59d73119f3b.rmeta --extern hmac=/opt/rustwide/target/debug/deps/libhmac-846949166dd834e6.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-004b97d4b145de82.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-c6c56ac5f72532e9.rmeta --extern sha1=/opt/rustwide/target/debug/deps/libsha1-5891df52eac79dbe.rmeta --extern sha2=/opt/rustwide/target/debug/deps/libsha2-552ac49d5363cc8b.rmeta --cap-lints=warn --crate-version 1.0.2` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "20267d9f40fb5d9d38f50f8bac10df6346aed0af5eb9d9e9b86036e705a60272", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20267d9f40fb5d9d38f50f8bac10df6346aed0af5eb9d9e9b86036e705a60272", kill_on_drop: false }`
[INFO] [stdout] 20267d9f40fb5d9d38f50f8bac10df6346aed0af5eb9d9e9b86036e705a60272
