[INFO] cloning repository https://github.com/CalvinNeo/Ruster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CalvinNeo/Ruster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCalvinNeo%2FRuster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCalvinNeo%2FRuster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5b125cb0e084d96ebb0bf44b68221fcba27cc65
[INFO] testing CalvinNeo/Ruster against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCalvinNeo%2FRuster" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CalvinNeo/Ruster on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CalvinNeo/Ruster
[INFO] finished tweaking git repo https://github.com/CalvinNeo/Ruster
[INFO] tweaked toml for git repo https://github.com/CalvinNeo/Ruster written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CalvinNeo/Ruster already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-cell v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d11f6ae752a22698dd28c5fbf0e243b42c2d41f1d15f4338b6618893d308b6d1
[INFO] running `Command { std: "docker" "start" "-a" "d11f6ae752a22698dd28c5fbf0e243b42c2d41f1d15f4338b6618893d308b6d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d11f6ae752a22698dd28c5fbf0e243b42c2d41f1d15f4338b6618893d308b6d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d11f6ae752a22698dd28c5fbf0e243b42c2d41f1d15f4338b6618893d308b6d1", kill_on_drop: false }`
[INFO] [stdout] d11f6ae752a22698dd28c5fbf0e243b42c2d41f1d15f4338b6618893d308b6d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56791e5ff8f9f90c7cd1f2b3b4a465e1b172360360406e2e461f2397dcf88f33
[INFO] running `Command { std: "docker" "start" "-a" "56791e5ff8f9f90c7cd1f2b3b4a465e1b172360360406e2e461f2397dcf88f33", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.54
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pin-cell v0.2.0
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling test_macro v0.1.0 (/opt/rustwide/workdir/test_macro)
[INFO] [stdout] warning: unused import: `proc_macro2::Span`
[INFO] [stdout]  --> test_macro/src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2::Span;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling learn_main v0.1.0 (/opt/rustwide/workdir/learn_main)
[INFO] [stdout] ===> arg TokenStream [Ident { ident: "AAAAAAAA", span: #0 bytes(12143..12151) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12151..12152) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12152..12153) }, Ident { ident: "aaaaaaaa", span: #0 bytes(12153..12161) }]
[INFO] [stdout] ===> input TokenStream [Punct { ch: '#', spacing: Alone, span: #0 bytes(12164..12165) }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "allow", span: #0 bytes(12166..12171) }, Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "clippy", span: #0 bytes(12172..12178) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12178..12179) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12179..12180) }, Ident { ident: "absurd_extreme_comparisons", span: #0 bytes(12180..12206) }], span: #0 bytes(12171..12207) }], span: #0 bytes(12165..12208) }, Punct { ch: '#', spacing: Alone, span: #0 bytes(12209..12210) }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "test_case", span: #0 bytes(12211..12220) }, Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "BBBBBBBB", span: #0 bytes(12221..12229) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12229..12230) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12230..12231) }, Ident { ident: "bbbbbbbb", span: #0 bytes(12231..12239) }], span: #0 bytes(12220..12240) }], span: #0 bytes(12210..12241) }, Ident { ident: "fn", span: #0 bytes(12242..12244) }, Ident { ident: "TTTTTTTTTT", span: #0 bytes(12245..12255) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(12255..12257) }, Group { delimiter: Brace, stream: TokenStream [Ident { ident: "KKKKKKKKK", span: #0 bytes(12264..12273) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(12273..12275) }, Punct { ch: ';', spacing: Alone, span: #0 bytes(12275..12276) }, Ident { ident: "fffffff", span: #0 bytes(12281..12288) }, Group { delimiter: Parenthesis, stream: TokenStream [], span: #0 bytes(12288..12290) }, Punct { ch: ';', spacing: Alone, span: #0 bytes(12290..12291) }], span: #0 bytes(12258..12293) }]
[INFO] [stdout] ===> fn_item ItemFn { attrs: [Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "allow", span: #0 bytes(12166..12171) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "clippy", span: #0 bytes(12172..12178) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12178..12179) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12179..12180) }, Ident { ident: "absurd_extreme_comparisons", span: #0 bytes(12180..12206) }], span: #0 bytes(12171..12207) }] }, Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "test_case", span: #0 bytes(12211..12220) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "BBBBBBBB", span: #0 bytes(12221..12229) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12229..12230) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12230..12231) }, Ident { ident: "bbbbbbbb", span: #0 bytes(12231..12239) }], span: #0 bytes(12220..12240) }] }], vis: Inherited, sig: Signature { constness: None, asyncness: None, unsafety: None, abi: None, fn_token: Fn, ident: Ident { ident: "TTTTTTTTTT", span: #0 bytes(12245..12255) }, generics: Generics { lt_token: None, params: [], gt_token: None, where_clause: None }, paren_token: Paren, inputs: [], variadic: None, output: Default }, block: Block { brace_token: Brace, stmts: [Semi(Call(ExprCall { attrs: [], func: Path(ExprPath { attrs: [], qself: None, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "KKKKKKKKK", span: #0 bytes(12264..12273) }, arguments: None }] } }), paren_token: Paren, args: [] }), Semi), Semi(Call(ExprCall { attrs: [], func: Path(ExprPath { attrs: [], qself: None, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "fffffff", span: #0 bytes(12281..12288) }, arguments: None }] } }), paren_token: Paren, args: [] }), Semi)] } }
[INFO] [stdout] ===> fn_item.attrs has Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "allow", span: #0 bytes(12166..12171) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "clippy", span: #0 bytes(12172..12178) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12178..12179) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12179..12180) }, Ident { ident: "absurd_extreme_comparisons", span: #0 bytes(12180..12206) }], span: #0 bytes(12171..12207) }] }
[INFO] [stdout] ===> fn_item.attrs has Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "test_case", span: #0 bytes(12211..12220) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "BBBBBBBB", span: #0 bytes(12221..12229) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12229..12230) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12230..12231) }, Ident { ident: "bbbbbbbb", span: #0 bytes(12231..12239) }], span: #0 bytes(12220..12240) }] }
[INFO] [stdout] ===> test_cases [TokenStream [Ident { ident: "AAAAAAAA", span: #0 bytes(12143..12151) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12151..12152) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12152..12153) }, Ident { ident: "aaaaaaaa", span: #0 bytes(12153..12161) }]]
[INFO] [stdout] ===> legal_test_case_name Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "test_case", span: #84 bytes(12131..12163) }, arguments: None }] }
[INFO] [stdout] ===> add test_case Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "test_case", span: #0 bytes(12211..12220) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "BBBBBBBB", span: #0 bytes(12221..12229) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12229..12230) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12230..12231) }, Ident { ident: "bbbbbbbb", span: #0 bytes(12231..12239) }], span: #0 bytes(12220..12240) }] }
[INFO] [stdout] ===> attrs_to_remove [1]
[INFO] [stdout] ===> final test_cases [TokenStream [Ident { ident: "AAAAAAAA", span: #0 bytes(12143..12151) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12151..12152) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12152..12153) }, Ident { ident: "aaaaaaaa", span: #0 bytes(12153..12161) }], TokenStream [Punct { ch: '#', spacing: Alone, span: #0 bytes(12209..12210) }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "test_case", span: #0 bytes(12211..12220) }, Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "BBBBBBBB", span: #0 bytes(12221..12229) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12229..12230) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12230..12231) }, Ident { ident: "bbbbbbbb", span: #0 bytes(12231..12239) }], span: #0 bytes(12220..12240) }], span: #0 bytes(12210..12241) }]]
[INFO] [stdout] ===> final fn_item.attrs [Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "allow", span: #0 bytes(12166..12171) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "clippy", span: #0 bytes(12172..12178) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12178..12179) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12179..12180) }, Ident { ident: "absurd_extreme_comparisons", span: #0 bytes(12180..12206) }], span: #0 bytes(12171..12207) }] }]
[INFO] [stdout] ===> Handle case TokenStream [Ident { ident: "AAAAAAAA", span: #0 bytes(12143..12151) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12151..12152) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12152..12153) }, Ident { ident: "aaaaaaaa", span: #0 bytes(12153..12161) }] item ItemFn { attrs: [Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "allow", span: #0 bytes(12166..12171) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "clippy", span: #0 bytes(12172..12178) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12178..12179) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12179..12180) }, Ident { ident: "absurd_extreme_comparisons", span: #0 bytes(12180..12206) }], span: #0 bytes(12171..12207) }] }], vis: Inherited, sig: Signature { constness: None, asyncness: None, unsafety: None, abi: None, fn_token: Fn, ident: Ident { ident: "TTTTTTTTTT", span: #0 bytes(12245..12255) }, generics: Generics { lt_token: None, params: [], gt_token: None, where_clause: None }, paren_token: Paren, inputs: [], variadic: None, output: Default }, block: Block { brace_token: Brace, stmts: [Semi(Call(ExprCall { attrs: [], func: Path(ExprPath { attrs: [], qself: None, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "KKKKKKKKK", span: #0 bytes(12264..12273) }, arguments: None }] } }), paren_token: Paren, args: [] }), Semi), Semi(Call(ExprCall { attrs: [], func: Path(ExprPath { attrs: [], qself: None, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "fffffff", span: #0 bytes(12281..12288) }, arguments: None }] } }), paren_token: Paren, args: [] }), Semi)] } }
[INFO] [stdout] ===> Handle case TokenStream [Punct { ch: '#', spacing: Alone, span: #0 bytes(12209..12210) }, Group { delimiter: Bracket, stream: TokenStream [Ident { ident: "test_case", span: #0 bytes(12211..12220) }, Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "BBBBBBBB", span: #0 bytes(12221..12229) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12229..12230) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12230..12231) }, Ident { ident: "bbbbbbbb", span: #0 bytes(12231..12239) }], span: #0 bytes(12220..12240) }], span: #0 bytes(12210..12241) }] item ItemFn { attrs: [Attribute { pound_token: Pound, style: Outer, bracket_token: Bracket, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "allow", span: #0 bytes(12166..12171) }, arguments: None }] }, tokens: TokenStream [Group { delimiter: Parenthesis, stream: TokenStream [Ident { ident: "clippy", span: #0 bytes(12172..12178) }, Punct { ch: ':', spacing: Joint, span: #0 bytes(12178..12179) }, Punct { ch: ':', spacing: Alone, span: #0 bytes(12179..12180) }, Ident { ident: "absurd_extreme_comparisons", span: #0 bytes(12180..12206) }], span: #0 bytes(12171..12207) }] }], vis: Inherited, sig: Signature { constness: None, asyncness: None, unsafety: None, abi: None, fn_token: Fn, ident: Ident { ident: "TTTTTTTTTT", span: #0 bytes(12245..12255) }, generics: Generics { lt_token: None, params: [], gt_token: None, where_clause: None }, paren_token: Paren, inputs: [], variadic: None, output: Default }, block: Block { brace_token: Brace, stmts: [Semi(Call(ExprCall { attrs: [], func: Path(ExprPath { attrs: [], qself: None, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "KKKKKKKKK", span: #0 bytes(12264..12273) }, arguments: None }] } }), paren_token: Paren, args: [] }), Semi), Semi(Call(ExprCall { attrs: [], func: Path(ExprPath { attrs: [], qself: None, path: Path { leading_colon: None, segments: [PathSegment { ident: Ident { ident: "fffffff", span: #0 bytes(12281..12288) }, arguments: None }] } }), paren_token: Paren, args: [] }), Semi)] } }
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> learn_main/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(negative_impls)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> learn_main/src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(panic_can_unwind)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec::Vec`
[INFO] [stdout]  --> learn_main/src/mod_macro/a.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PinCell`, `PinMut`
[INFO] [stdout]  --> learn_main/src/mod_pin/mod.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use pin_cell::{PinCell, PinMut};
[INFO] [stdout]   |                ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stdout]  --> learn_main/src/mod_pin/mod.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::borrow::{Borrow, BorrowMut};
[INFO] [stdout]   |                   ^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomPinned`
[INFO] [stdout]  --> learn_main/src/mod_pin/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::marker::PhantomPinned;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `pin_mut2`
[INFO] [stdout]    --> learn_main/src/mod_pin/mod.rs:108:14
[INFO] [stdout]     |
[INFO] [stdout] 108 | macro_rules! pin_mut2 {
[INFO] [stdout]     |              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `helped` is imported redundantly
[INFO] [stdout]   --> learn_main/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |       use crate::helped;
[INFO] [stdout]    |           ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: learn_main/src/mod_macro/mod.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | / macro_rules! helped {
[INFO] [stdout] 20 | |     // () => { helper!() } // This might lead to an error due to 'helper' not being in scope.
[INFO] [stdout] 21 | |     () => {
[INFO] [stdout] 22 | |         $crate::helper!()
[INFO] [stdout] 23 | |     };
[INFO] [stdout] 24 | | }
[INFO] [stdout]    | |_- the item `helped` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate-level attribute should be in the root module
[INFO] [stdout]  --> learn_main/src/mod_test_macro/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(custom_test_frameworks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> learn_main/src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(panic_can_unwind)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> learn_main/src/mod_pointer/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn_main` (bin "learn_main") due to 4 previous errors; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "56791e5ff8f9f90c7cd1f2b3b4a465e1b172360360406e2e461f2397dcf88f33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56791e5ff8f9f90c7cd1f2b3b4a465e1b172360360406e2e461f2397dcf88f33", kill_on_drop: false }`
[INFO] [stdout] 56791e5ff8f9f90c7cd1f2b3b4a465e1b172360360406e2e461f2397dcf88f33
