[INFO] fetching crate cargo-n64 0.1.2...
[INFO] documenting cargo-n64-0.1.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate cargo-n64 0.1.2 into /workspace/builds/worker-45/source
[INFO] validating manifest of crates.io crate cargo-n64 0.1.2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-n64 0.1.2
[INFO] finished tweaking crates.io crate cargo-n64 0.1.2
[INFO] tweaked toml for crates.io crate cargo-n64 0.1.2 written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate crates.io crate cargo-n64 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scroll v0.10.1
[INFO] [stderr]   Downloaded goblin v0.2.0
[INFO] [stderr]   Downloaded fatfs v0.3.3
[INFO] [stderr]   Downloaded scroll_derive v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25b9c077a71b1741a994596ac0eb4b090f487e82d1f30a5a45fddcab79146577
[INFO] running `Command { std: "docker" "start" "-a" "25b9c077a71b1741a994596ac0eb4b090f487e82d1f30a5a45fddcab79146577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25b9c077a71b1741a994596ac0eb4b090f487e82d1f30a5a45fddcab79146577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25b9c077a71b1741a994596ac0eb4b090f487e82d1f30a5a45fddcab79146577", kill_on_drop: false }`
[INFO] [stdout] 25b9c077a71b1741a994596ac0eb4b090f487e82d1f30a5a45fddcab79146577
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71c1496e7af361e32dc8041859a9292199c1e0904af7dde261ca0ef67ecc2498
[INFO] running `Command { std: "docker" "start" "-a" "71c1496e7af361e32dc8041859a9292199c1e0904af7dde261ca0ef67ecc2498", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking colored v1.9.2
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking fatfs v0.3.3
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling scroll_derive v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking goblin v0.2.0
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]  Documenting cargo-n64 v0.1.2 (/opt/rustwide/workdir)
[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(crate_visibility_modifier)]
[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:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_trait)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(wrapping_int_impl)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `cargo-n64`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name cargo_n64 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=632c1ea4877454e8 -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-1b5bd1b820a35456.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-6762d514198dfc17.rmeta --extern crc32fast=/opt/rustwide/target/debug/deps/libcrc32fast-1f9e2e1540df3af8.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-5542512a6dd40231.rmeta --extern failure_derive=/opt/rustwide/target/debug/deps/libfailure_derive-0f692be63adab75e.so --extern fatfs=/opt/rustwide/target/debug/deps/libfatfs-6b16302813e2649c.rmeta --extern goblin=/opt/rustwide/target/debug/deps/libgoblin-334d5cd7a2b92b21.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-e5549dd9882595b3.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-197602f6be3634cf.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2db583d5e1b5eb21.rmeta --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "71c1496e7af361e32dc8041859a9292199c1e0904af7dde261ca0ef67ecc2498", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c1496e7af361e32dc8041859a9292199c1e0904af7dde261ca0ef67ecc2498", kill_on_drop: false }`
[INFO] [stdout] 71c1496e7af361e32dc8041859a9292199c1e0904af7dde261ca0ef67ecc2498