[INFO] cloning repository https://github.com/three-star-flex-book/bitdefender-rust-error-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/three-star-flex-book/bitdefender-rust-error-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthree-star-flex-book%2Fbitdefender-rust-error-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthree-star-flex-book%2Fbitdefender-rust-error-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a734b5973eb81a68e1c0e8fbab07b8e98e32efe2
[INFO] documenting three-star-flex-book/bitdefender-rust-error-example against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthree-star-flex-book%2Fbitdefender-rust-error-example" "/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/three-star-flex-book/bitdefender-rust-error-example 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 git repo https://github.com/three-star-flex-book/bitdefender-rust-error-example
[INFO] finished tweaking git repo https://github.com/three-star-flex-book/bitdefender-rust-error-example
[INFO] tweaked toml for git repo https://github.com/three-star-flex-book/bitdefender-rust-error-example written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/three-star-flex-book/bitdefender-rust-error-example 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded warp v0.2.1
[INFO] [stderr]   Downloaded serde_json v1.0.47
[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" "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] aff5b60e958cb17fa03cd92e67c83114cbb27ea4d59ff7fe5e7344c000d05ede
[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" "aff5b60e958cb17fa03cd92e67c83114cbb27ea4d59ff7fe5e7344c000d05ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aff5b60e958cb17fa03cd92e67c83114cbb27ea4d59ff7fe5e7344c000d05ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aff5b60e958cb17fa03cd92e67c83114cbb27ea4d59ff7fe5e7344c000d05ede", kill_on_drop: false }`
[INFO] [stdout] aff5b60e958cb17fa03cd92e67c83114cbb27ea4d59ff7fe5e7344c000d05ede
[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" "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] 8a7e2d77c3627440b12dbba4e96c21cb2b3df74a4666f7478681991db9bec105
[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" "8a7e2d77c3627440b12dbba4e96c21cb2b3df74a4666f7478681991db9bec105", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking smallvec v1.2.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking ascii v0.9.3
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking serde_json v1.0.47
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling rand_core v0.3.1
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[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking buf_redux v0.8.4
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[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking headers-core v0.2.0
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[INFO] [stderr]     Checking tungstenite v0.9.2
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking redis v0.15.1
[INFO] [stderr]     Checking hyper v0.13.2
[INFO] [stderr]     Checking warp v0.2.1
[INFO] [stderr]  Documenting warp-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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 document `warp-example`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name warp_example src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern futures=/opt/rustwide/target/debug/deps/libfutures-929737ecb8a12e56.rmeta --extern redis=/opt/rustwide/target/debug/deps/libredis-0e0b25c6da1b5c3f.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-a7d1ef541108e770.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-caadbf42f42ed7cb.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8a7e2d77c3627440b12dbba4e96c21cb2b3df74a4666f7478681991db9bec105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a7e2d77c3627440b12dbba4e96c21cb2b3df74a4666f7478681991db9bec105", kill_on_drop: false }`
[INFO] [stdout] 8a7e2d77c3627440b12dbba4e96c21cb2b3df74a4666f7478681991db9bec105