[INFO] crate vcard 0.4.4 is already in cache
[INFO] checking vcard-0.4.4 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate vcard 0.4.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate vcard 0.4.4 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate vcard 0.4.4
[INFO] finished tweaking crates.io crate vcard 0.4.4
[INFO] tweaked toml for crates.io crate vcard 0.4.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate vcard 0.4.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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] b00b6a491b738a56a8dde22c9ef35c1ba56c8111e06a35e9e427bfcfae14811c
[INFO] running `"docker" "start" "-a" "b00b6a491b738a56a8dde22c9ef35c1ba56c8111e06a35e9e427bfcfae14811c"`
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling quick-xml v0.17.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking nom v5.1.0
[INFO] [stderr]    Compiling backtrace v0.3.44
[INFO] [stderr]     Checking regex-cache v0.2.0
[INFO] [stderr]    Compiling parse-zoneinfo v0.2.1
[INFO] [stderr]    Compiling chrono-tz v0.5.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling educe v0.4.2
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]     Checking base64-stream v1.0.11
[INFO] [stderr]    Compiling phonenumber v0.2.4+8.11.3
[INFO] [stderr]     Checking validators v0.20.14
[INFO] [stderr]     Checking vcard v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:5:37
[INFO] [stderr]   |
[INFO] [stderr] 5 |     static ref NEW_LINE_RE: Regex = { Regex::new(r"\n\r|\r\n|\n").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/escaping/mod.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 |     static ref COMMA_RE: Regex = { Regex::new(r",").unwrap() };
[INFO] [stderr]   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:7:38
[INFO] [stderr]   |
[INFO] [stderr] 7 |     static ref SEMICOLON_RE: Regex = { Regex::new(r";").unwrap() };
[INFO] [stderr]   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:8:38
[INFO] [stderr]   |
[INFO] [stderr] 8 |     static ref BACKSLASH_RE: Regex = { Regex::new(r"\\").unwrap() };
[INFO] [stderr]   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:9:32
[INFO] [stderr]   |
[INFO] [stderr] 9 |     static ref TAB_RE: Regex = { Regex::new("\x09").unwrap() };
[INFO] [stderr]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/parameters/media_type.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         { Regex::new(r"^[^\x00-\x1F\x22\x3A\x3B\x7F]+$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/values/language_tag.rs:9:41
[INFO] [stderr]   |
[INFO] [stderr] 9 |     static ref LANGUAGE_TAG_RE: Regex = { Regex::new(r"^[\S]+$").unwrap() };
[INFO] [stderr]   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/values/telephone_value.rs:11:42
[INFO] [stderr]    |
[INFO] [stderr] 11 |     static ref TEL_EXTENSION_RE: Regex = { Regex::new(r"^[\-0-9]+$").unwrap() };
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/values/telephone_value.rs:12:35
[INFO] [stderr]    |
[INFO] [stderr] 12 |     static ref SPACES_RE: Regex = { Regex::new("[ ]+").unwrap() };
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/values/telephone_value.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |     static ref PLUS_RE: Regex = { Regex::new(r"\+").unwrap() };
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:456:9
[INFO] [stderr]     |
[INFO] [stderr] 456 |         { Regex::new(r"^([^\x00-\x08\x0A-\x1F\x7F]|\n\r|\r\n|\n)*$").unwrap() };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:457:33
[INFO] [stderr]     |
[INFO] [stderr] 457 |     static ref SAFE_RE: Regex = { Regex::new(r"^[^\x00-\x1F\x22\x3A\x3B\x7F]*$").unwrap() };
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:458:34
[INFO] [stderr]     |
[INFO] [stderr] 458 |     static ref QSAFE_RE: Regex = { Regex::new(r"^[^\x00-\x1F\x22\x7F]*$").unwrap() };
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:459:39
[INFO] [stderr]     |
[INFO] [stderr] 459 |     static ref IANA_TOKEN_RE: Regex = { Regex::new(r"^[a-zA-Z0-9\-]+$").unwrap() };
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:460:35
[INFO] [stderr]     |
[INFO] [stderr] 460 |     static ref X_NAME_RE: Regex = { Regex::new(r"^[xX]-[a-zA-Z0-9\-]+$").unwrap() };
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:461:44
[INFO] [stderr]     |
[INFO] [stderr] 461 |     static ref X_PROPERTY_NAME_RE: Regex = { Regex::new(r"^X-[A-Z0-9\-]+$").unwrap() };
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:5:37
[INFO] [stderr]   |
[INFO] [stderr] 5 |     static ref NEW_LINE_RE: Regex = { Regex::new(r"\n\r|\r\n|\n").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/escaping/mod.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 |     static ref COMMA_RE: Regex = { Regex::new(r",").unwrap() };
[INFO] [stderr]   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:7:38
[INFO] [stderr]   |
[INFO] [stderr] 7 |     static ref SEMICOLON_RE: Regex = { Regex::new(r";").unwrap() };
[INFO] [stderr]   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:8:38
[INFO] [stderr]   |
[INFO] [stderr] 8 |     static ref BACKSLASH_RE: Regex = { Regex::new(r"\\").unwrap() };
[INFO] [stderr]   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/escaping/mod.rs:9:32
[INFO] [stderr]   |
[INFO] [stderr] 9 |     static ref TAB_RE: Regex = { Regex::new("\x09").unwrap() };
[INFO] [stderr]   |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/parameters/media_type.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         { Regex::new(r"^[^\x00-\x1F\x22\x3A\x3B\x7F]+$").unwrap() };
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]  --> src/values/language_tag.rs:9:41
[INFO] [stderr]   |
[INFO] [stderr] 9 |     static ref LANGUAGE_TAG_RE: Regex = { Regex::new(r"^[\S]+$").unwrap() };
[INFO] [stderr]   |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/values/telephone_value.rs:11:42
[INFO] [stderr]    |
[INFO] [stderr] 11 |     static ref TEL_EXTENSION_RE: Regex = { Regex::new(r"^[\-0-9]+$").unwrap() };
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/values/telephone_value.rs:12:35
[INFO] [stderr]    |
[INFO] [stderr] 12 |     static ref SPACES_RE: Regex = { Regex::new("[ ]+").unwrap() };
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> src/values/telephone_value.rs:13:33
[INFO] [stderr]    |
[INFO] [stderr] 13 |     static ref PLUS_RE: Regex = { Regex::new(r"\+").unwrap() };
[INFO] [stderr]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:456:9
[INFO] [stderr]     |
[INFO] [stderr] 456 |         { Regex::new(r"^([^\x00-\x08\x0A-\x1F\x7F]|\n\r|\r\n|\n)*$").unwrap() };
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:457:33
[INFO] [stderr]     |
[INFO] [stderr] 457 |     static ref SAFE_RE: Regex = { Regex::new(r"^[^\x00-\x1F\x22\x3A\x3B\x7F]*$").unwrap() };
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:458:34
[INFO] [stderr]     |
[INFO] [stderr] 458 |     static ref QSAFE_RE: Regex = { Regex::new(r"^[^\x00-\x1F\x22\x7F]*$").unwrap() };
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:459:39
[INFO] [stderr]     |
[INFO] [stderr] 459 |     static ref IANA_TOKEN_RE: Regex = { Regex::new(r"^[a-zA-Z0-9\-]+$").unwrap() };
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:460:35
[INFO] [stderr]     |
[INFO] [stderr] 460 |     static ref X_NAME_RE: Regex = { Regex::new(r"^[xX]-[a-zA-Z0-9\-]+$").unwrap() };
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]    --> src/lib.rs:461:44
[INFO] [stderr]     |
[INFO] [stderr] 461 |     static ref X_PROPERTY_NAME_RE: Regex = { Regex::new(r"^X-[A-Z0-9\-]+$").unwrap() };
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 16 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 09s
[INFO] running `"docker" "inspect" "b00b6a491b738a56a8dde22c9ef35c1ba56c8111e06a35e9e427bfcfae14811c"`
[INFO] running `"docker" "rm" "-f" "b00b6a491b738a56a8dde22c9ef35c1ba56c8111e06a35e9e427bfcfae14811c"`
[INFO] [stdout] b00b6a491b738a56a8dde22c9ef35c1ba56c8111e06a35e9e427bfcfae14811c