Dec 19 09:18:50.618 INFO checking schnupperboy/quizduell against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:18:50.618 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/schnupperboy/quizduell:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:18:50.996 INFO [stdout] a190f8fbf44adef4b6f2047e7b871173ae9e56440cae393f1389c3a3db611339
Dec 19 09:18:51.002 INFO running `"docker" "start" "-a" "a190f8fbf44adef4b6f2047e7b871173ae9e56440cae393f1389c3a3db611339"`
Dec 19 09:18:52.808 INFO [stderr]    Compiling pq-sys v0.4.5
Dec 19 09:18:52.816 INFO [stderr]    Compiling proc-macro2 v0.4.8
Dec 19 09:18:52.816 INFO [stderr]     Checking tokio-io v0.1.7
Dec 19 09:18:52.818 INFO [stderr]     Checking http v0.1.7
Dec 19 09:18:52.818 INFO [stderr]     Checking regex v1.0.1
Dec 19 09:18:52.818 INFO [stderr]     Checking tokio-threadpool v0.1.5
Dec 19 09:18:52.818 INFO [stderr]     Checking backtrace v0.3.9
Dec 19 09:18:52.818 INFO [stderr]    Compiling diesel_derives v1.3.0
Dec 19 09:18:56.425 INFO [stderr]     Checking failure v0.1.1
Dec 19 09:19:00.576 INFO [stderr]     Checking tokio-codec v0.1.0
Dec 19 09:19:00.601 INFO [stderr]     Checking tokio-reactor v0.1.2
Dec 19 09:19:00.654 INFO [stderr]     Checking tokio-fs v0.1.2
Dec 19 09:19:00.881 INFO [stderr]    Compiling quote v0.6.3
Dec 19 09:19:02.864 INFO [stderr]    Compiling syn v0.14.4
Dec 19 09:19:03.097 INFO [stderr]     Checking tokio-tcp v0.1.0
Dec 19 09:19:03.097 INFO [stderr]     Checking tokio-udp v0.1.1
Dec 19 09:19:05.176 INFO [stderr]     Checking tokio v0.1.7
Dec 19 09:19:06.513 INFO [stderr]     Checking dotenv v0.13.0
Dec 19 09:19:09.360 INFO [stderr]     Checking h2 v0.1.10
Dec 19 09:19:16.290 INFO [stderr]     Checking diesel v1.3.2
Dec 19 09:19:23.037 INFO [stderr]    Compiling serde_derive v1.0.70
Dec 19 09:19:24.012 INFO [stderr]     Checking hyper v0.12.6
Dec 19 09:20:10.202 INFO [stderr]     Checking quizduell v0.1.0 (/opt/crater/workdir)
Dec 19 09:20:10.935 INFO [stderr] warning: cannot find type `table` in this scope
Dec 19 09:20:10.935 INFO [stderr]    --> <::diesel::macros::table_body macros>:165:33
Dec 19 09:20:10.935 INFO [stderr]     |
Dec 19 09:20:10.935 INFO [stderr] 165 | derive ( Debug , Clone , Copy , QueryId ) ] /// The actual table struct
Dec 19 09:20:10.935 INFO [stderr]     |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.935 INFO [stderr]     |
Dec 19 09:20:10.935 INFO [stderr]     = note: #[warn(proc_macro_derive_resolution_fallback)] on by default
Dec 19 09:20:10.935 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.935 INFO [stderr]     = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.935 INFO [stderr] 
Dec 19 09:20:10.935 INFO [stderr] warning: cannot find type `table` in this scope
Dec 19 09:20:10.935 INFO [stderr]    --> <::diesel::macros::table_body macros>:165:33
Dec 19 09:20:10.935 INFO [stderr]     |
Dec 19 09:20:10.935 INFO [stderr] 165 | derive ( Debug , Clone , Copy , QueryId ) ] /// The actual table struct
Dec 19 09:20:10.936 INFO [stderr]     |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.936 INFO [stderr]     |
Dec 19 09:20:10.936 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.936 INFO [stderr]     = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.936 INFO [stderr] 
Dec 19 09:20:10.936 INFO [stderr] warning: cannot find type `id` in this scope
Dec 19 09:20:10.936 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:10.936 INFO [stderr]   |
Dec 19 09:20:10.936 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:10.936 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.936 INFO [stderr]   |
Dec 19 09:20:10.936 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.937 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.937 INFO [stderr] 
Dec 19 09:20:10.937 INFO [stderr] warning: cannot find type `question_text` in this scope
Dec 19 09:20:10.937 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:10.937 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.937 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.937 INFO [stderr] 
Dec 19 09:20:10.937 INFO [stderr] warning: cannot find type `option_a` in this scope
Dec 19 09:20:10.937 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:10.937 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.937 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.937 INFO [stderr] 
Dec 19 09:20:10.937 INFO [stderr] warning: cannot find type `option_b` in this scope
Dec 19 09:20:10.937 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:10.937 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.937 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.937 INFO [stderr] 
Dec 19 09:20:10.937 INFO [stderr] warning: cannot find type `option_c` in this scope
Dec 19 09:20:10.937 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:10.937 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.937 INFO [stderr]   |
Dec 19 09:20:10.937 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.937 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.937 INFO [stderr] 
Dec 19 09:20:10.937 INFO [stderr] warning: cannot find type `option_d` in this scope
Dec 19 09:20:10.937 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:10.938 INFO [stderr]   |
Dec 19 09:20:10.938 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:10.938 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.938 INFO [stderr]   |
Dec 19 09:20:10.938 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.938 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.938 INFO [stderr] 
Dec 19 09:20:10.938 INFO [stderr] warning: cannot find type `Question` in this scope
Dec 19 09:20:10.938 INFO [stderr]  --> src/models.rs:3:10
Dec 19 09:20:10.938 INFO [stderr]   |
Dec 19 09:20:10.938 INFO [stderr] 3 | #[derive(Queryable, Serialize, Deserialize, Debug)]
Dec 19 09:20:10.938 INFO [stderr]   |          ^^^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.938 INFO [stderr]   |
Dec 19 09:20:10.938 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.938 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.938 INFO [stderr] 
Dec 19 09:20:10.938 INFO [stderr] warning: cannot find type `questions` in this scope
Dec 19 09:20:10.938 INFO [stderr]   --> src/models.rs:13:10
Dec 19 09:20:10.938 INFO [stderr]    |
Dec 19 09:20:10.938 INFO [stderr] 13 | #[derive(Insertable)]
Dec 19 09:20:10.938 INFO [stderr]    |          ^^^^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.938 INFO [stderr]    |
Dec 19 09:20:10.938 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.938 INFO [stderr]    = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.938 INFO [stderr] 
Dec 19 09:20:10.938 INFO [stderr] warning: cannot find type `NewQuestion` in this scope
Dec 19 09:20:10.938 INFO [stderr]   --> src/models.rs:13:10
Dec 19 09:20:10.938 INFO [stderr]    |
Dec 19 09:20:10.938 INFO [stderr] 13 | #[derive(Insertable)]
Dec 19 09:20:10.938 INFO [stderr]    |          ^^^^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:10.938 INFO [stderr]    |
Dec 19 09:20:10.940 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:10.940 INFO [stderr]    = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:10.940 INFO [stderr] 
Dec 19 09:20:11.057 INFO [stderr] warning: cannot find type `table` in this scope
Dec 19 09:20:11.057 INFO [stderr]    --> <::diesel::macros::table_body macros>:165:33
Dec 19 09:20:11.057 INFO [stderr]     |
Dec 19 09:20:11.057 INFO [stderr] 165 | derive ( Debug , Clone , Copy , QueryId ) ] /// The actual table struct
Dec 19 09:20:11.057 INFO [stderr]     |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.057 INFO [stderr]     |
Dec 19 09:20:11.057 INFO [stderr]     = note: #[warn(proc_macro_derive_resolution_fallback)] on by default
Dec 19 09:20:11.057 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.057 INFO [stderr]     = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.057 INFO [stderr] 
Dec 19 09:20:11.057 INFO [stderr] warning: cannot find type `table` in this scope
Dec 19 09:20:11.057 INFO [stderr]    --> <::diesel::macros::table_body macros>:165:33
Dec 19 09:20:11.057 INFO [stderr]     |
Dec 19 09:20:11.057 INFO [stderr] 165 | derive ( Debug , Clone , Copy , QueryId ) ] /// The actual table struct
Dec 19 09:20:11.057 INFO [stderr]     |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.057 INFO [stderr]     |
Dec 19 09:20:11.057 INFO [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.057 INFO [stderr]     = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `id` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:11.058 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `question_text` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:11.058 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `option_a` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:11.058 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `option_b` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:11.058 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `option_c` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:11.058 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `option_d` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> <::diesel::macros::__diesel_column macros>:5:33
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 5 | derive ( Debug , Clone , Copy , QueryId , Default ) ] pub struct $ column_name
Dec 19 09:20:11.058 INFO [stderr]   |                                 ^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `Question` in this scope
Dec 19 09:20:11.058 INFO [stderr]  --> src/models.rs:3:10
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr] 3 | #[derive(Queryable, Serialize, Deserialize, Debug)]
Dec 19 09:20:11.058 INFO [stderr]   |          ^^^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]   |
Dec 19 09:20:11.058 INFO [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]   = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `questions` in this scope
Dec 19 09:20:11.058 INFO [stderr]   --> src/models.rs:13:10
Dec 19 09:20:11.058 INFO [stderr]    |
Dec 19 09:20:11.058 INFO [stderr] 13 | #[derive(Insertable)]
Dec 19 09:20:11.058 INFO [stderr]    |          ^^^^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.058 INFO [stderr]    |
Dec 19 09:20:11.058 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.058 INFO [stderr]    = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.058 INFO [stderr] 
Dec 19 09:20:11.058 INFO [stderr] warning: cannot find type `NewQuestion` in this scope
Dec 19 09:20:11.058 INFO [stderr]   --> src/models.rs:13:10
Dec 19 09:20:11.059 INFO [stderr]    |
Dec 19 09:20:11.059 INFO [stderr] 13 | #[derive(Insertable)]
Dec 19 09:20:11.059 INFO [stderr]    |          ^^^^^^^^^^ names from parent modules are not accessible without an explicit import
Dec 19 09:20:11.059 INFO [stderr]    |
Dec 19 09:20:11.059 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 19 09:20:11.059 INFO [stderr]    = note: for more information, see issue #50504 <https://github.com/rust-lang/rust/issues/50504>
Dec 19 09:20:11.059 INFO [stderr] 
Dec 19 09:20:13.744 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 21s
Dec 19 09:20:14.456 INFO running `"docker" "inspect" "a190f8fbf44adef4b6f2047e7b871173ae9e56440cae393f1389c3a3db611339"`
Dec 19 09:20:14.764 INFO running `"docker" "rm" "-f" "a190f8fbf44adef4b6f2047e7b871173ae9e56440cae393f1389c3a3db611339"`
Dec 19 09:20:15.097 INFO [stdout] a190f8fbf44adef4b6f2047e7b871173ae9e56440cae393f1389c3a3db611339