[INFO] crate auto_enums 0.7.1 is already in cache
[INFO] checking auto_enums-0.7.1 against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] extracting crate auto_enums 0.7.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate auto_enums 0.7.1 on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate auto_enums 0.7.1
[INFO] finished tweaking crates.io crate auto_enums 0.7.1
[INFO] tweaked toml for crates.io crate auto_enums 0.7.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "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] d5c3bc14b3e1e0fbb96f7c4296260369c86e4eacc177a24ce50810e1c0eaf357
[INFO] running `"docker" "start" "-a" "d5c3bc14b3e1e0fbb96f7c4296260369c86e4eacc177a24ce50810e1c0eaf357"`
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]    Compiling auto_enums_derive v0.7.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling derive_utils v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling auto_enums_core v0.7.1
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking auto_enums v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking trybuild v1.0.24
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> tests/enum_derive.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 | /     #[enum_derive(
[INFO] [stderr] 108 | |         BufRead, Read, Seek, Write, Display, Error, Debug, Clone, Copy, PartialEq, Eq, PartialOrd,
[INFO] [stderr] 109 | |         Ord, Hash
[INFO] [stderr] 110 | |     )]
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> tests/enum_derive.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 | /     #[enum_derive(
[INFO] [stderr] 108 | |         BufRead, Read, Seek, Write, Display, Error, Debug, Clone, Copy, PartialEq, Eq, PartialOrd,
[INFO] [stderr] 109 | |         Ord, Hash
[INFO] [stderr] 110 | |     )]
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/nested.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     #[auto_enum(Iterator)]
[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/nested.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     #[auto_enum(Iterator)]
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]   --> tests/nested.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     #[auto_enum(Iterator)]
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]   --> tests/nested.rs:94:26
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) }
[INFO] [stderr]    |                          ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]   --> tests/nested.rs:94:42
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) }
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:129:34
[INFO] [stderr]     |
[INFO] [stderr] 129 |                 let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:129:50
[INFO] [stderr]     |
[INFO] [stderr] 129 |                 let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:167:30
[INFO] [stderr]     |
[INFO] [stderr] 167 |             let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                              ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:167:46
[INFO] [stderr]     |
[INFO] [stderr] 167 |             let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:185:34
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 let x = if x > 4 { (2..=10).flat_map(|x| 1..x) } else { core::iter::empty() };
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:185:71
[INFO] [stderr]     |
[INFO] [stderr] 185 |                 let x = if x > 4 { (2..=10).flat_map(|x| 1..x) } else { core::iter::empty() };
[INFO] [stderr]     |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:208:35
[INFO] [stderr]     |
[INFO] [stderr] 208 |                         if x > 11 { (2..=10).flat_map(|x| 1..x) } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:208:72
[INFO] [stderr]     |
[INFO] [stderr] 208 |                         if x > 11 { (2..=10).flat_map(|x| 1..x) } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:247:30
[INFO] [stderr]     |
[INFO] [stderr] 247 |             let y = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                              ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:247:46
[INFO] [stderr]     |
[INFO] [stderr] 247 |             let y = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:250:30
[INFO] [stderr]     |
[INFO] [stderr] 250 |             let z = if x < 4 { 2..10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                              ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:250:45
[INFO] [stderr]     |
[INFO] [stderr] 250 |             let z = if x < 4 { 2..10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:264:34
[INFO] [stderr]     |
[INFO] [stderr] 264 |                 let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:264:50
[INFO] [stderr]     |
[INFO] [stderr] 264 |                 let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:279:30
[INFO] [stderr]     |
[INFO] [stderr] 279 |             let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                              ^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> tests/nested.rs:279:46
[INFO] [stderr]     |
[INFO] [stderr] 279 |             let x = if x > 4 { 2..=10 } else { (11..20).map(|x| x - 1) };
[INFO] [stderr]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/auto_enum.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         #[auto_enum(Iterator)]
[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/auto_enum.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         #[auto_enum(Iterator)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> tests/auto_enum.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         #[auto_enum(Iterator)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> tests/auto_enum.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |         #[auto_enum(Iterator)]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `"docker" "inspect" "d5c3bc14b3e1e0fbb96f7c4296260369c86e4eacc177a24ce50810e1c0eaf357"`
[INFO] running `"docker" "rm" "-f" "d5c3bc14b3e1e0fbb96f7c4296260369c86e4eacc177a24ce50810e1c0eaf357"`
[INFO] [stdout] d5c3bc14b3e1e0fbb96f7c4296260369c86e4eacc177a24ce50810e1c0eaf357