[INFO] cloning repository https://github.com/tracer-protocol/tracer-ome
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tracer-protocol/tracer-ome" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracer-protocol%2Ftracer-ome", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracer-protocol%2Ftracer-ome'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2400e042205678a8b6932389c8c90b53598d1cf8
[INFO] documenting tracer-protocol/tracer-ome against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftracer-protocol%2Ftracer-ome" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tracer-protocol/tracer-ome on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tracer-protocol/tracer-ome
[INFO] finished tweaking git repo https://github.com/tracer-protocol/tracer-ome
[INFO] tweaked toml for git repo https://github.com/tracer-protocol/tracer-ome written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/tracer-protocol/tracer-ome already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0e83c46e6df264b1ad885dbae7868b9c73a456d4da4a7744444f992cee9d2da
[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" "f0e83c46e6df264b1ad885dbae7868b9c73a456d4da4a7744444f992cee9d2da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0e83c46e6df264b1ad885dbae7868b9c73a456d4da4a7744444f992cee9d2da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0e83c46e6df264b1ad885dbae7868b9c73a456d4da4a7744444f992cee9d2da", kill_on_drop: false }`
[INFO] [stdout] f0e83c46e6df264b1ad885dbae7868b9c73a456d4da4a7744444f992cee9d2da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d19986d528486c10e75188f1e1bd5bb2c27f77b4623f4f2075a6c47d03a8e3c
[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" "3d19986d528486c10e75188f1e1bd5bb2c27f77b4623f4f2075a6c47d03a8e3c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling ring v0.16.12
[INFO] [stderr]    Compiling secp256k1-sys v0.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.61
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling enum-display-derive v0.1.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rlp v0.4.6
[INFO] [stderr]     Checking fixed-hash v0.6.1
[INFO] [stderr]     Checking uint v0.8.5
[INFO] [stderr]     Checking futures-lite v1.11.3
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking headers v0.3.4
[INFO] [stderr]     Checking impl-rlp v0.2.1
[INFO] [stderr]    Compiling openssl v0.10.33
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking secp256k1 v0.17.2
[INFO] [stderr]     Checking async-executor v1.4.0
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking value-bag v1.0.0-alpha.6
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking polling v2.0.3
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking tungstenite v0.12.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking multipart v0.17.1
[INFO] [stderr]     Checking async-io v1.4.0
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki v0.21.2
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking async-std v1.9.0
[INFO] [stderr]     Checking soketto v0.4.2
[INFO] [stderr]     Checking parity-scale-codec v1.3.7
[INFO] [stderr]     Checking impl-serde v0.3.1
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking ethbloom v0.9.2
[INFO] [stderr]     Checking jsonrpc-core v14.2.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking tokio-util v0.6.6
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-stream v0.1.5
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking tokio-tungstenite v0.13.0
[INFO] [stderr]     Checking async-native-tls v0.3.3
[INFO] [stderr]     Checking h2 v0.3.2
[INFO] [stderr]     Checking impl-codec v0.4.2
[INFO] [stderr]     Checking primitive-types v0.7.3
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking ethereum-types v0.9.2
[INFO] [stderr]     Checking ethabi v12.0.0
[INFO] [stderr]     Checking hyper v0.14.6
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking web3 v0.13.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking warp v0.3.1
[INFO] [stderr]     Checking reqwest v0.11.3
[INFO] [stderr]  Documenting tracer-ome v0.1.0 (/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(map_first_last)]
[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(result_contains_err)]
[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(destructuring_assignment)]
[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 `tracer-ome`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name tracer_ome 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 byte_slice_cast=/opt/rustwide/target/debug/deps/libbyte_slice_cast-92b828d3beaa7924.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-b55b8e72bfe1c077.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-193c6426728b0bdd.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-3b709fb1c56fe276.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-34d7a040fe13f274.so --extern enum_display_derive=/opt/rustwide/target/debug/deps/libenum_display_derive-0e8acbf7f5fe80ef.so --extern ethabi=/opt/rustwide/target/debug/deps/libethabi-ad89182726971ee5.rmeta --extern ethereum_types=/opt/rustwide/target/debug/deps/libethereum_types-62476ce8921d5978.rmeta --extern generic_array=/opt/rustwide/target/debug/deps/libgeneric_array-0f2ff2e379a5743d.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-4e132399b961d086.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-9c436d67d12d7b9e.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c58d0c6e26d3f4ab.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-910ab84c57357b97.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-fd7e5b94c29eec61.rmeta --extern rlp=/opt/rustwide/target/debug/deps/librlp-888e45d6c2bd9297.rmeta --extern rustc_hex=/opt/rustwide/target/debug/deps/librustc_hex-8391a7939f4164e5.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a07fcfafeb868d4f.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d7f4c0703d86ab23.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-51a0bd7ecef55ed4.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-30851ea7f8530c46.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-2ce66662b97c7507.rmeta --extern web3=/opt/rustwide/target/debug/deps/libweb3-093d6009cdc14512.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3d19986d528486c10e75188f1e1bd5bb2c27f77b4623f4f2075a6c47d03a8e3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d19986d528486c10e75188f1e1bd5bb2c27f77b4623f4f2075a6c47d03a8e3c", kill_on_drop: false }`
[INFO] [stdout] 3d19986d528486c10e75188f1e1bd5bb2c27f77b4623f4f2075a6c47d03a8e3c
