[INFO] cloning repository https://github.com/abhijeetbhagat/charon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abhijeetbhagat/charon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fcharon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fcharon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66e46690f1169ece25187296786dd7533f9aee94
[INFO] building abhijeetbhagat/charon against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhijeetbhagat%2Fcharon" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abhijeetbhagat/charon on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/abhijeetbhagat/charon
[INFO] finished tweaking git repo https://github.com/abhijeetbhagat/charon
[INFO] tweaked toml for git repo https://github.com/abhijeetbhagat/charon written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/abhijeetbhagat/charon already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.charon_driver.test
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43b9a5e5b172a2501ce79b96a85367aca4796739b893415f77cd08fd782a4ce0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "43b9a5e5b172a2501ce79b96a85367aca4796739b893415f77cd08fd782a4ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43b9a5e5b172a2501ce79b96a85367aca4796739b893415f77cd08fd782a4ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43b9a5e5b172a2501ce79b96a85367aca4796739b893415f77cd08fd782a4ce0", kill_on_drop: false }`
[INFO] [stdout] 43b9a5e5b172a2501ce79b96a85367aca4796739b893415f77cd08fd782a4ce0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8eb5f4d22140dc0f3c282d1a2f7cd7af5b292094d10cc9b9dd593fb55f26c18
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b8eb5f4d22140dc0f3c282d1a2f7cd7af5b292094d10cc9b9dd593fb55f26c18", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: dependencies.charon_driver.test
[INFO] [stderr]    Compiling itertools v0.4.16
[INFO] [stderr]    Compiling llvm-sys v0.2.1
[INFO] [stderr]    Compiling syntax v0.1.0 (/opt/rustwide/workdir/src/libsyntax)
[INFO] [stdout] warning: unknown lint: `enum_variant_names`
[INFO] [stdout]   --> src/libsyntax/ast.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[allow(enum_variant_names)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown lint: `enum_variant_names`
[INFO] [stdout]   --> src/libsyntax/ast.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 97 | #[allow(enum_variant_names)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/libsyntax/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[macro_use]extern crate itertools;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/libsyntax/parse/lexer/mod.rs:147:17
[INFO] [stdout]     |
[INFO] [stdout] 147 |             '0' ... '9' => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/libsyntax/parse/lexer/mod.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |             'a' ... 'z' => {
[INFO] [stdout]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/libsyntax/parse/parser.rs:4:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Local`, `Stmt`
[INFO] [stdout]  --> src/libsyntax/parse/parser.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | use ast::{Stmt, Expr, Block, TType, Local, Decl, OptionalTypeExprTupleList, OptionalParamInfoList, OptionalIdTypePairs};
[INFO] [stdout]   |           ^^^^                      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Stmt::*`
[INFO] [stdout]  --> src/libsyntax/parse/parser.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use ast::Stmt::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeMap`
[INFO] [stdout]  --> src/libsyntax/ast.rs:4:33
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::{HashMap, BTreeMap};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visitor`
[INFO] [stdout]  --> src/libsyntax/ast.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use visit::{Visitor};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OptionalIdTypePairs`
[INFO] [stdout]  --> src/libsyntax/visitor_impl.rs:5:39
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ast::{Binding, Expr, Decl, TType, OptionalIdTypePairs};
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]   --> src/libsyntax/visitor_impl.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::cell::RefCell;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:744:21
[INFO] [stdout]     |
[INFO] [stdout] 744 |                     t => {} //FIXME this isn't an if-then-else expr. should we do something here?
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `array_ty` is never read
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:787:25
[INFO] [stdout]     |
[INFO] [stdout] 787 |                 let mut array_ty = TNil;
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dim_ty`
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:795:30
[INFO] [stdout]     |
[INFO] [stdout] 795 |                         let (dim_ty, dim_expr) = self.get_nxt_and_parse();
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_dim_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `init_ty`
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:801:46
[INFO] [stdout]     |
[INFO] [stdout] 801 | ...                   let (init_ty, init_expr) = self.get_nxt_and_parse();
[INFO] [stdout]     |                            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_init_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `T`
[INFO] [stdout]   --> src/libsyntax/ast.rs:31:31
[INFO] [stdout]    |
[INFO] [stdout] 31 |             TType::TArray(ref T) => f.write_str("Array of some type"),
[INFO] [stdout]    |                               ^ help: if this is intentional, prefix it with an underscore: `_T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/libsyntax/ast.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |             TType::TCustom(ref name) => f.write_str("Custom"),
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/libsyntax/ast.rs:81:18
[INFO] [stdout]    |
[INFO] [stdout] 81 |             Some(s) => true,
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> src/libsyntax/ast.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         for s in &self.statements{
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block`
[INFO] [stdout]  --> src/libsyntax/visit.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn visit_block(&mut self, block : &'a Block){
[INFO] [stdout]   |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_block`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stmt`
[INFO] [stdout]  --> src/libsyntax/visit.rs:9:30
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn visit_stmt(&mut self, stmt : &'a Stmt){
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]   --> src/libsyntax/visit.rs:13:30
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn visit_expr(&mut self, expr : &'a mut Expr){
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]   --> src/libsyntax/visit.rs:16:30
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn visit_decl(&mut self, decl : &'a mut Decl){
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/libsyntax/visitor_impl.rs:323:33
[INFO] [stdout]     |
[INFO] [stdout] 323 |             TypeDec(ref id, ref ty) => {
[INFO] [stdout]     |                                 ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `convert`
[INFO] [stdout]  --> src/libsyntax/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(convert)]
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:264:91
[INFO] [stdout]     |
[INFO] [stdout] 264 | ...                   _ => panic!("Expected either int, string, type-id, array of, '{' after '='")
[INFO] [stdout]     |                                                                                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 264 |                             _ => panic!("{}", "Expected either int, string, type-id, array of, '{' after '='")
[INFO] [stdout]     |                                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:302:40
[INFO] [stdout]     |
[INFO] [stdout] 302 | ...                   panic!(format!("parameter '{}' found more than once", id));
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 302 |                                 panic!("parameter '{}' found more than once", id);
[INFO] [stdout]     |                                       --                                       --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains a brace
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:329:38
[INFO] [stdout]     |
[INFO] [stdout] 329 |             _ => panic!("Expected a '{' after ':='")
[INFO] [stdout]     |                                      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 329 |             _ => panic!("{}", "Expected a '{' after ':='")
[INFO] [stdout]     |                         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/libsyntax/parse/parser.rs:611:40
[INFO] [stdout]     |
[INFO] [stdout] 611 | ...                   panic!(format!("parameter '{}' found more than once", id));
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 611 |                                 panic!("parameter '{}' found more than once", id);
[INFO] [stdout]     |                                       --                                       --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/libsyntax/visitor_impl.rs:240:49
[INFO] [stdout]     |
[INFO] [stdout] 240 | ...                   _ => panic!(format!("Invalid reference to variable '{0}'. Different binding found.", *id))
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 240 |                                     _ => panic!("Invalid reference to variable '{0}'. Different binding found.", *id)
[INFO] [stdout]     |                                                --                                                                  --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/libsyntax/visitor_impl.rs:286:28
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     panic!(format!("Types mismatch. Variable type is {0} and expression type is '{1}'", *ty, self.ty));
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     panic!("Types mismatch. Variable type is {0} and expression type is '{1}'", *ty, self.ty);
[INFO] [stdout]     |                           --                                                                               --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/libsyntax/visitor_impl.rs:303:28
[INFO] [stdout]     |
[INFO] [stdout] 303 |                     panic!(format!("Return type '{0}' doesn't match with the type of the last expression '{1}'.", ret_type, self.ty));
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 303 |                     panic!("Return type '{0}' doesn't match with the type of the last expression '{1}'.", ret_type, self.ty);
[INFO] [stdout]     |                           --                                                                                              --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/libsyntax/visitor_impl.rs:312:36
[INFO] [stdout]     |
[INFO] [stdout] 312 | ...                   panic!(format!("Duplicate param '{0}' found", p.0));
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 312 |                             panic!("Duplicate param '{0}' found", p.0);
[INFO] [stdout]     |                                   --                                --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `T` should have a snake case name
[INFO] [stdout]   --> src/libsyntax/ast.rs:31:31
[INFO] [stdout]    |
[INFO] [stdout] 31 |             TType::TArray(ref T) => f.write_str("Array of some type"),
[INFO] [stdout]    |                               ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `B` should have a snake case name
[INFO] [stdout]  --> src/libsyntax/ptr.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn B<T>(value : T)->B<T>{
[INFO] [stdout]   |        ^ help: convert the identifier to snake case: `b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syntax`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "b8eb5f4d22140dc0f3c282d1a2f7cd7af5b292094d10cc9b9dd593fb55f26c18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8eb5f4d22140dc0f3c282d1a2f7cd7af5b292094d10cc9b9dd593fb55f26c18", kill_on_drop: false }`
[INFO] [stdout] b8eb5f4d22140dc0f3c282d1a2f7cd7af5b292094d10cc9b9dd593fb55f26c18
