Dec 12 02:46:36.452 INFO checking FredericDesgreniers/rand_field against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 02:46:36.452 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 02:46:37.096 INFO [stdout] 1af4b1c10bba52bf90fe89574a80225a9e8f932c95a156617f284f6d12e5d59d
Dec 12 02:46:37.098 INFO running `"docker" "start" "-a" "1af4b1c10bba52bf90fe89574a80225a9e8f932c95a156617f284f6d12e5d59d"`
Dec 12 02:46:39.148 INFO [stderr] usermod: no changes
Dec 12 02:46:39.272 INFO [stderr]     Checking proc-macro2 v0.4.9
Dec 12 02:46:39.272 INFO [stderr]    Compiling rand v0.5.4
Dec 12 02:46:39.281 INFO [stderr]     Checking rand_field v0.1.0 (/source/rand_field)
Dec 12 02:46:39.292 INFO [stderr]    Compiling syn v0.14.7
Dec 12 02:46:41.848 INFO [stderr] warning: unused import: `rand::Rng`
Dec 12 02:46:41.848 INFO [stderr]  --> rand_field/src/lib.rs:2:5
Dec 12 02:46:41.848 INFO [stderr]   |
Dec 12 02:46:41.848 INFO [stderr] 2 | use rand::Rng;
Dec 12 02:46:41.848 INFO [stderr]   |     ^^^^^^^^^
Dec 12 02:46:41.848 INFO [stderr]   |
Dec 12 02:46:41.848 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 02:46:41.848 INFO [stderr] 
Dec 12 02:46:42.024 INFO [stderr] warning: unused import: `rand::Rng`
Dec 12 02:46:42.024 INFO [stderr]  --> rand_field/src/lib.rs:2:5
Dec 12 02:46:42.024 INFO [stderr]   |
Dec 12 02:46:42.024 INFO [stderr] 2 | use rand::Rng;
Dec 12 02:46:42.024 INFO [stderr]   |     ^^^^^^^^^
Dec 12 02:46:42.024 INFO [stderr]   |
Dec 12 02:46:42.024 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 02:46:42.024 INFO [stderr] 
Dec 12 02:46:42.653 INFO [stderr]     Checking quote v0.6.4
Dec 12 02:46:56.792 INFO [stderr]    Compiling rand_field_derive v0.1.0 (/source/rand_field_derive)
Dec 12 02:46:58.469 INFO [stderr] warning: unused import: `Field`
Dec 12 02:46:58.469 INFO [stderr]   --> rand_field_derive/src/lib.rs:11:17
Dec 12 02:46:58.469 INFO [stderr]    |
Dec 12 02:46:58.469 INFO [stderr] 11 | use syn::{Data, Field, Fields, Type};
Dec 12 02:46:58.469 INFO [stderr]    |                 ^^^^^
Dec 12 02:46:58.469 INFO [stderr]    |
Dec 12 02:46:58.469 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 02:46:58.469 INFO [stderr] 
Dec 12 02:46:58.469 INFO [stderr] warning: unused import: `proc_macro2::Punct`
Dec 12 02:46:58.469 INFO [stderr]   --> rand_field_derive/src/lib.rs:12:5
Dec 12 02:46:58.469 INFO [stderr]    |
Dec 12 02:46:58.469 INFO [stderr] 12 | use proc_macro2::Punct;
Dec 12 02:46:58.469 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 12 02:46:58.469 INFO [stderr] 
Dec 12 02:46:58.694 INFO [stderr] warning: unused variable: `index`
Dec 12 02:46:58.695 INFO [stderr]   --> rand_field_derive/src/lib.rs:85:13
Dec 12 02:46:58.695 INFO [stderr]    |
Dec 12 02:46:58.695 INFO [stderr] 85 |         let index = rand::thread_rng().gen_range(0, choices.len());
Dec 12 02:46:58.696 INFO [stderr]    |             ^^^^^ help: consider using `_index` instead
Dec 12 02:46:58.696 INFO [stderr]    |
Dec 12 02:46:58.696 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 02:46:58.697 INFO [stderr] 
Dec 12 02:46:59.540 INFO [stderr] warning: unused import: `Field`
Dec 12 02:46:59.541 INFO [stderr]   --> rand_field_derive/src/lib.rs:11:17
Dec 12 02:46:59.541 INFO [stderr]    |
Dec 12 02:46:59.541 INFO [stderr] 11 | use syn::{Data, Field, Fields, Type};
Dec 12 02:46:59.541 INFO [stderr]    |                 ^^^^^
Dec 12 02:46:59.542 INFO [stderr]    |
Dec 12 02:46:59.542 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 02:46:59.542 INFO [stderr] 
Dec 12 02:46:59.542 INFO [stderr] warning: unused import: `proc_macro2::Punct`
Dec 12 02:46:59.542 INFO [stderr]   --> rand_field_derive/src/lib.rs:12:5
Dec 12 02:46:59.543 INFO [stderr]    |
Dec 12 02:46:59.543 INFO [stderr] 12 | use proc_macro2::Punct;
Dec 12 02:46:59.543 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 12 02:46:59.543 INFO [stderr] 
Dec 12 02:46:59.848 INFO [stderr] warning: unused variable: `index`
Dec 12 02:46:59.848 INFO [stderr]   --> rand_field_derive/src/lib.rs:85:13
Dec 12 02:46:59.848 INFO [stderr]    |
Dec 12 02:46:59.848 INFO [stderr] 85 |         let index = rand::thread_rng().gen_range(0, choices.len());
Dec 12 02:46:59.848 INFO [stderr]    |             ^^^^^ help: consider using `_index` instead
Dec 12 02:46:59.848 INFO [stderr]    |
Dec 12 02:46:59.848 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 02:46:59.848 INFO [stderr] 
Dec 12 02:46:59.916 INFO [stderr] warning: unused import: `Field`
Dec 12 02:46:59.916 INFO [stderr]   --> rand_field_derive/src/lib.rs:11:17
Dec 12 02:46:59.916 INFO [stderr]    |
Dec 12 02:46:59.916 INFO [stderr] 11 | use syn::{Data, Field, Fields, Type};
Dec 12 02:46:59.916 INFO [stderr]    |                 ^^^^^
Dec 12 02:46:59.916 INFO [stderr]    |
Dec 12 02:46:59.916 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 02:46:59.916 INFO [stderr] 
Dec 12 02:46:59.916 INFO [stderr] warning: unused import: `proc_macro2::Punct`
Dec 12 02:46:59.916 INFO [stderr]   --> rand_field_derive/src/lib.rs:12:5
Dec 12 02:46:59.916 INFO [stderr]    |
Dec 12 02:46:59.916 INFO [stderr] 12 | use proc_macro2::Punct;
Dec 12 02:46:59.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 12 02:46:59.917 INFO [stderr] 
Dec 12 02:47:00.152 INFO [stderr] warning: unused variable: `index`
Dec 12 02:47:00.153 INFO [stderr]   --> rand_field_derive/src/lib.rs:85:13
Dec 12 02:47:00.153 INFO [stderr]    |
Dec 12 02:47:00.153 INFO [stderr] 85 |         let index = rand::thread_rng().gen_range(0, choices.len());
Dec 12 02:47:00.154 INFO [stderr]    |             ^^^^^ help: consider using `_index` instead
Dec 12 02:47:00.154 INFO [stderr]    |
Dec 12 02:47:00.154 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 02:47:00.154 INFO [stderr] 
Dec 12 02:47:00.765 INFO [stderr]     Checking RandField v0.1.0 (/source)
Dec 12 02:47:01.780 INFO [stderr] warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 12 02:47:01.780 INFO [stderr]  --> src/main.rs:1:12
Dec 12 02:47:01.781 INFO [stderr]   |
Dec 12 02:47:01.781 INFO [stderr] 1 | #![feature(attr_literals)]
Dec 12 02:47:01.781 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 12 02:47:01.781 INFO [stderr]   |
Dec 12 02:47:01.782 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 02:47:01.782 INFO [stderr] 
Dec 12 02:47:01.782 INFO [stderr] warning: crate `RandField` should have a snake case name such as `rand_field`
Dec 12 02:47:01.782 INFO [stderr]   |
Dec 12 02:47:01.782 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 12 02:47:01.782 INFO [stderr] 
Dec 12 02:47:02.117 INFO [stderr] warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
Dec 12 02:47:02.117 INFO [stderr]  --> src/main.rs:1:12
Dec 12 02:47:02.118 INFO [stderr]   |
Dec 12 02:47:02.118 INFO [stderr] 1 | #![feature(attr_literals)]
Dec 12 02:47:02.118 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 12 02:47:02.118 INFO [stderr]   |
Dec 12 02:47:02.119 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 12 02:47:02.119 INFO [stderr] 
Dec 12 02:47:02.119 INFO [stderr] warning: crate `RandField` should have a snake case name such as `rand_field`
Dec 12 02:47:02.119 INFO [stderr]   |
Dec 12 02:47:02.119 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Dec 12 02:47:02.119 INFO [stderr] 
Dec 12 02:47:02.176 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.00s
Dec 12 02:47:02.184 INFO [stderr] su: No module specific data is present
Dec 12 02:47:03.718 INFO running `"docker" "inspect" "1af4b1c10bba52bf90fe89574a80225a9e8f932c95a156617f284f6d12e5d59d"`
Dec 12 02:47:04.030 INFO running `"docker" "rm" "-f" "1af4b1c10bba52bf90fe89574a80225a9e8f932c95a156617f284f6d12e5d59d"`
Dec 12 02:47:04.444 INFO [stdout] 1af4b1c10bba52bf90fe89574a80225a9e8f932c95a156617f284f6d12e5d59d