[INFO] cloning repository https://github.com/wadadli/webapp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wadadli/webapp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwadadli%2Fwebapp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwadadli%2Fwebapp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb78c7f18926e8734621c38863e80b7d52d8660d
[INFO] documenting wadadli/webapp 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%2Fwadadli%2Fwebapp" "/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/wadadli/webapp 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/wadadli/webapp
[INFO] finished tweaking git repo https://github.com/wadadli/webapp
[INFO] tweaked toml for git repo https://github.com/wadadli/webapp written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/wadadli/webapp 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] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[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] a7cba749dc7614b3649eaf29ff8cbe22ab85cce1649c7f6aedb518d4e6cade6f
[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" "a7cba749dc7614b3649eaf29ff8cbe22ab85cce1649c7f6aedb518d4e6cade6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7cba749dc7614b3649eaf29ff8cbe22ab85cce1649c7f6aedb518d4e6cade6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7cba749dc7614b3649eaf29ff8cbe22ab85cce1649c7f6aedb518d4e6cade6f", kill_on_drop: false }`
[INFO] [stdout] a7cba749dc7614b3649eaf29ff8cbe22ab85cce1649c7f6aedb518d4e6cade6f
[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] 8046312f6e79e8ed32871bcf3e12b90e4291867963edb1084b8e01aa018aa591
[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" "8046312f6e79e8ed32871bcf3e12b90e4291867963edb1084b8e01aa018aa591", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]     Checking arrayref v0.3.4
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]     Checking smallvec v0.6.4
[INFO] [stderr]     Checking twox-hash v1.1.1
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]     Checking serde_json v1.0.24
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking flate2 v1.0.2
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking nix v0.11.0
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]     Checking regex v1.0.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking atoi v0.2.3
[INFO] [stderr]     Checking chrono v0.4.5
[INFO] [stderr]     Checking mysql_common v0.8.0
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking mysql v14.0.0
[INFO] [stderr]  Documenting webapp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview)]
[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; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `webapp`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name webapp 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 chrono=/opt/rustwide/target/debug/deps/libchrono-a9e596d6bf626070.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-6bf2cea217b2b2b1.rmeta --extern iron=/opt/rustwide/target/debug/deps/libiron-4782a46ec8689c94.rmeta --extern mysql=/opt/rustwide/target/debug/deps/libmysql-478512578dc5f26a.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8046312f6e79e8ed32871bcf3e12b90e4291867963edb1084b8e01aa018aa591", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8046312f6e79e8ed32871bcf3e12b90e4291867963edb1084b8e01aa018aa591", kill_on_drop: false }`
[INFO] [stdout] 8046312f6e79e8ed32871bcf3e12b90e4291867963edb1084b8e01aa018aa591