[INFO] fetching crate validators 0.20.16...
[INFO] checking validators-0.20.16 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate validators 0.20.16 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate validators 0.20.16 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate validators 0.20.16
[INFO] finished tweaking crates.io crate validators 0.20.16
[INFO] tweaked toml for crates.io crate validators 0.20.16 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6bcdd7a99587a84fd8300bd34f21330e303f1fee8e1b3282661648f9391cfe6
[INFO] running `"docker" "start" "-a" "b6bcdd7a99587a84fd8300bd34f21330e303f1fee8e1b3282661648f9391cfe6"`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking debug-helper v0.3.8
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking validators v0.20.16 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/base64_url/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         { Regex::new(r"^([A-Za-z0-9\-_]{4})*[A-Za-z0-9\-_]{2,4}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/boolean/mod.rs:12:44
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub(crate) static ref TRUE_RE: Regex = { Regex::new(r"^(?i)true|yes|on|y|t|1$").unwrap() };
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/boolean/mod.rs:13:45
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub(crate) static ref FALSE_RE: Regex = { Regex::new(r"^(?i)false|no|off|n|f|0$").unwrap() };
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/line/mod.rs:12:33
[INFO] [stderr]    |
[INFO] [stderr] 12 |     static ref LINE_RE: Regex = { Regex::new("^[^\x00-\x08\x0A-\x1F\x7F]*$").unwrap() };
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         { Regex::new("^([0-9A-F]{2}:){5}[0-9A-F]{2}").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         { Regex::new("^([0-9a-f]{2}:){5}[0-9a-f]{2}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         { Regex::new("^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:19:59
[INFO] [stderr]    |
[INFO] [stderr] 19 |     static ref MAC_ADDRESS_NO_COLON_UPPERCASE_RE: Regex = { Regex::new("^[0-9A-F]{12}").unwrap() };
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:20:59
[INFO] [stderr]    |
[INFO] [stderr] 20 |     static ref MAC_ADDRESS_NO_COLON_LOWERCASE_RE: Regex = { Regex::new("^[0-9a-f]{12}$").unwrap() };
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 |     static ref MAC_ADDRESS_NO_COLON_RE: Regex = { Regex::new("^[0-9a-fA-F]{12}$").unwrap() };
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/short_crypt_url_component/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         { Regex::new(r"^([A-Za-z0-9\-_]{4})*([A-Za-z0-9\-_]|[A-Za-z0-9\-_]{3,4})$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/text/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         { Regex::new("^([^\x00-\x08\x0A-\x1F\x7F]|\r\n|\n\r|\n)*$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/uuid/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         { Regex::new("^[0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/uuid/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         { Regex::new("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/version/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         { Regex::new(r"^(\d)+(\.(\d)+)?(\.(\d)+)?(-([^\x00-\x1F\x7F]+))?$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/base64_url/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         { Regex::new(r"^([A-Za-z0-9\-_]{4})*[A-Za-z0-9\-_]{2,4}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/boolean/mod.rs:12:44
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub(crate) static ref TRUE_RE: Regex = { Regex::new(r"^(?i)true|yes|on|y|t|1$").unwrap() };
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/boolean/mod.rs:13:45
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub(crate) static ref FALSE_RE: Regex = { Regex::new(r"^(?i)false|no|off|n|f|0$").unwrap() };
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/line/mod.rs:12:33
[INFO] [stderr]    |
[INFO] [stderr] 12 |     static ref LINE_RE: Regex = { Regex::new("^[^\x00-\x08\x0A-\x1F\x7F]*$").unwrap() };
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         { Regex::new("^([0-9A-F]{2}:){5}[0-9A-F]{2}").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         { Regex::new("^([0-9a-f]{2}:){5}[0-9a-f]{2}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         { Regex::new("^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:19:59
[INFO] [stderr]    |
[INFO] [stderr] 19 |     static ref MAC_ADDRESS_NO_COLON_UPPERCASE_RE: Regex = { Regex::new("^[0-9A-F]{12}").unwrap() };
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:20:59
[INFO] [stderr]    |
[INFO] [stderr] 20 |     static ref MAC_ADDRESS_NO_COLON_LOWERCASE_RE: Regex = { Regex::new("^[0-9a-f]{12}$").unwrap() };
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/mac_address/mod.rs:21:49
[INFO] [stderr]    |
[INFO] [stderr] 21 |     static ref MAC_ADDRESS_NO_COLON_RE: Regex = { Regex::new("^[0-9a-fA-F]{12}$").unwrap() };
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/short_crypt_url_component/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         { Regex::new(r"^([A-Za-z0-9\-_]{4})*([A-Za-z0-9\-_]|[A-Za-z0-9\-_]{3,4})$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/text/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         { Regex::new("^([^\x00-\x08\x0A-\x1F\x7F]|\r\n|\n\r|\n)*$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/uuid/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         { Regex::new("^[0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/uuid/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         { Regex::new("^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/version/mod.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |         { Regex::new(r"^(\d)+(\.(\d)+)?(\.(\d)+)?(-([^\x00-\x1F\x7F]+))?$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/macros.rs:45:35
[INFO] [stderr]    |
[INFO] [stderr] 45 |         static ref RE_S1: Regex = { Regex::new("^(Hi|Hello)$").unwrap() };
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/macros.rs:49:35
[INFO] [stderr]    |
[INFO] [stderr] 49 |         static ref RE_S2: Regex = { Regex::new(r"^[\S\s]+$").unwrap() };
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/macros.rs:93:35
[INFO] [stderr]    |
[INFO] [stderr] 93 |         static ref RE_N1: Regex = { Regex::new(r"^[1-8][0-9]$").unwrap() };
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/macros.rs:97:35
[INFO] [stderr]    |
[INFO] [stderr] 97 |         static ref RE_N2: Regex = { Regex::new(r"^[0-1]?[1-8][0-9]$").unwrap() };
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> tests/macros.rs:101:35
[INFO] [stderr]     |
[INFO] [stderr] 101 |         static ref RE_N3: Regex = { Regex::new(r"^[0-1]?[1-8][0-9]\.[0-9]$").unwrap() };
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 15 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.66s
[INFO] running `"docker" "inspect" "b6bcdd7a99587a84fd8300bd34f21330e303f1fee8e1b3282661648f9391cfe6"`
[INFO] running `"docker" "rm" "-f" "b6bcdd7a99587a84fd8300bd34f21330e303f1fee8e1b3282661648f9391cfe6"`
[INFO] [stdout] b6bcdd7a99587a84fd8300bd34f21330e303f1fee8e1b3282661648f9391cfe6