[INFO] fetching crate mysql_common 0.22.2...
[INFO] documenting mysql_common-0.22.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate mysql_common 0.22.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate mysql_common 0.22.2 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 crates.io crate mysql_common 0.22.2
[INFO] finished tweaking crates.io crate mysql_common 0.22.2
[INFO] tweaked toml for crates.io crate mysql_common 0.22.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 694135c4d2783a6c2a68d462a83dbfe76bf29325053dc2ea0aef0d5d67831ec0
[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" "694135c4d2783a6c2a68d462a83dbfe76bf29325053dc2ea0aef0d5d67831ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "694135c4d2783a6c2a68d462a83dbfe76bf29325053dc2ea0aef0d5d67831ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "694135c4d2783a6c2a68d462a83dbfe76bf29325053dc2ea0aef0d5d67831ec0", kill_on_drop: false }`
[INFO] [stdout] 694135c4d2783a6c2a68d462a83dbfe76bf29325053dc2ea0aef0d5d67831ec0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 338be1227349533bbed880c35bf094b13401186d718ebc733544184614fcf64f
[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" "338be1227349533bbed880c35bf094b13401186d718ebc733544184614fcf64f", kill_on_drop: false }`
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling libz-sys v1.1.1
[INFO] [stderr]     Checking num-traits v0.2.12
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking rust_decimal v1.7.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking time v0.2.17
[INFO] [stderr]     Checking bigdecimal v0.1.2
[INFO] [stderr]     Checking lexical v5.2.0
[INFO] [stderr]  Documenting mysql_common v0.22.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/packets.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         { Regex::new(r"^5.5.5-(\d{1,2})\.(\d{1,2})\.(\d{1,3})-MariaDB").unwrap() };
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/packets.rs:35:36
[INFO] [stdout]    |
[INFO] [stdout] 35 |     static ref VERSION_RE: Regex = { Regex::new(r"^(\d{1,2})\.(\d{1,2})\.(\d{1,3})(.*)").unwrap() };
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:25:41
[INFO] [stdout]    |
[INFO] [stdout] 25 |     static ref DATETIME_RE_YMD: Regex = { Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap() };
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         { Regex::new(r"^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$").unwrap() };
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         { Regex::new(r"^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\.\d{1,6}$").unwrap() };
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:30:42
[INFO] [stdout]    |
[INFO] [stdout] 30 |     static ref TIME_RE_HH_MM_SS: Regex = { Regex::new(r"^\d{2}:[0-5]\d:[0-5]\d$").unwrap() };
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         { Regex::new(r"^\d{2}:[0-5]\d:[0-5]\d\.\d{1,6}$").unwrap() };
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:33:43
[INFO] [stdout]    |
[INFO] [stdout] 33 |     static ref TIME_RE_HHH_MM_SS: Regex = { Regex::new(r"^[0-8]\d\d:[0-5]\d:[0-5]\d$").unwrap() };
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]   --> src/value/convert/mod.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         { Regex::new(r"^[0-8]\d\d:[0-5]\d:[0-5]\d\.\d{1,6}$").unwrap() };
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.36s
[INFO] running `Command { std: "docker" "inspect" "338be1227349533bbed880c35bf094b13401186d718ebc733544184614fcf64f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "338be1227349533bbed880c35bf094b13401186d718ebc733544184614fcf64f", kill_on_drop: false }`
[INFO] [stdout] 338be1227349533bbed880c35bf094b13401186d718ebc733544184614fcf64f