[INFO] cloning repository https://github.com/cpralea/xlang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cpralea/xlang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcpralea%2Fxlang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcpralea%2Fxlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d751f5646445c5c897ec2a48ab776933287c772
[INFO] building cpralea/xlang against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcpralea%2Fxlang" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cpralea/xlang on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cpralea/xlang
[INFO] finished tweaking git repo https://github.com/cpralea/xlang
[INFO] tweaked toml for git repo https://github.com/cpralea/xlang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/cpralea/xlang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argparse v0.2.1
[INFO] [stderr]   Downloaded maplit v0.1.4
[INFO] [stderr]   Downloaded itertools v0.6.0
[INFO] [stderr]   Downloaded ref_eq v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 676137ddf5c786500d5666b3dde2bcf375256da187ee6f19e53f287c473026a3
[INFO] running `Command { std: "docker" "start" "-a" "676137ddf5c786500d5666b3dde2bcf375256da187ee6f19e53f287c473026a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "676137ddf5c786500d5666b3dde2bcf375256da187ee6f19e53f287c473026a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676137ddf5c786500d5666b3dde2bcf375256da187ee6f19e53f287c473026a3", kill_on_drop: false }`
[INFO] [stdout] 676137ddf5c786500d5666b3dde2bcf375256da187ee6f19e53f287c473026a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acdf471cc77c7c21ab9905a92ab6f0eecdba67ff26569cb2c46ecf972d441f7c
[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" "acdf471cc77c7c21ab9905a92ab6f0eecdba67ff26569cb2c46ecf972d441f7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ref_eq v1.0.0
[INFO] [stderr]    Compiling maplit v0.1.4
[INFO] [stderr]    Compiling xlrt v0.1.0 (/opt/rustwide/workdir/xlrt)
[INFO] [stderr]    Compiling xlc v0.1.1 (/opt/rustwide/workdir/xlc)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/common/collection.rs:78:23
[INFO] [stdout]    |
[INFO] [stdout] 78 |         (self as &mut iterators::FlexIteratorByRef<'a, T>).next().map(|e| *e)
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iterators::FlexIteratorByRef<'a, T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/common/collection.rs:81:19
[INFO] [stdout]    |
[INFO] [stdout] 81 |         (self as &iterators::FlexIteratorByRef<'a, T>).peek(offset).map(|e| *e)
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iterators::FlexIteratorByRef<'a, T>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/ast/node.rs:95:46
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn accept<T>(&'a self, visitor: &mut NodeVisitor<'a, Result = T>) {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn NodeVisitor<'a, Result = T>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/ast/node.rs:145:59
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn descend_into_assignment<T>(&'a self, visitor: &mut NodeVisitor<'a, Result = T>) {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn NodeVisitor<'a, Result = T>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/ast/node.rs:159:59
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn descend_into_expression<T>(&'a self, visitor: &mut NodeVisitor<'a, Result = T>) {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn NodeVisitor<'a, Result = T>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/ast/node.rs:181:54
[INFO] [stdout]     |
[INFO] [stdout] 181 |     fn descend_into_print<T>(&'a self, visitor: &mut NodeVisitor<'a, Result = T>) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn NodeVisitor<'a, Result = T>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/ast/node.rs:195:56
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn descend_into_program<T>(&'a self, visitor: &mut NodeVisitor<'a, Result = T>) {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn NodeVisitor<'a, Result = T>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/ast/node.rs:210:56
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn descend_into_unknown<T>(&'a self, visitor: &mut NodeVisitor<'a, Result = T>) {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn NodeVisitor<'a, Result = T>`
[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: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> xlc/src/io/destination.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 |         Ok(Destination { file: try!(fs::File::create(file)) })
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> xlc/src/io/source.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut file = try!(fs::File::open(file));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> xlc/src/io/source.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         try!(file.read_to_string(&mut content));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/assignment.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/assignment.rs:44:18
[INFO] [stdout]    |
[INFO] [stdout] 44 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/parser/expression.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:16:18
[INFO] [stdout]    |
[INFO] [stdout] 16 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:44:18
[INFO] [stdout]    |
[INFO] [stdout] 44 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:55:37
[INFO] [stdout]    |
[INFO] [stdout] 55 | type PrevLvlExpParser<'a> = fn(&mut common::FlexIteratorByRef<'a, ast::Token>)
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:57:35
[INFO] [stdout]    |
[INFO] [stdout] 57 | type CurLvlOpParser<'a> = fn(&mut common::FlexIteratorByRef<'a, ast::Token>)
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/expression.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:117:18
[INFO] [stdout]     |
[INFO] [stdout] 117 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:147:44
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn is_unary_l0_expression<'a>(tokens: &mut common::FlexIteratorByRef<'a, ast::Token>) -> bool {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:178:18
[INFO] [stdout]     |
[INFO] [stdout] 178 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:212:18
[INFO] [stdout]     |
[INFO] [stdout] 212 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:252:18
[INFO] [stdout]     |
[INFO] [stdout] 252 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:267:18
[INFO] [stdout]     |
[INFO] [stdout] 267 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:281:18
[INFO] [stdout]     |
[INFO] [stdout] 281 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:295:18
[INFO] [stdout]     |
[INFO] [stdout] 295 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> xlc/src/parser/expression.rs:310:18
[INFO] [stdout]     |
[INFO] [stdout] 310 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/parser/identifier.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/parser/parentheses.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/parentheses.rs:15:18
[INFO] [stdout]    |
[INFO] [stdout] 15 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/print.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/print.rs:37:18
[INFO] [stdout]    |
[INFO] [stdout] 37 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/program.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/parser/statement.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/parser/unknown.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/parser/utils.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     tokens: &mut common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/parser/utils.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |     tokens: &common::FlexIteratorByRef<'a, ast::Token>,
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn common::FlexIteratorByRef<'a, ast::Token>`
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/driver.rs:49:22
[INFO] [stdout]    |
[INFO] [stdout] 49 |             '_' | 'a'...'z' | 'A'...'Z' => status = words::parse_keyword_or_identifier(source),
[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]   --> xlc/src/tokenizer/driver.rs:49:34
[INFO] [stdout]    |
[INFO] [stdout] 49 |             '_' | 'a'...'z' | 'A'...'Z' => status = words::parse_keyword_or_identifier(source),
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/driver.rs:50:16
[INFO] [stdout]    |
[INFO] [stdout] 50 |             '0'...'9' => status = literals::parse_integer(source),
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/literals.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn parse_integer(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: `...` range patterns are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/literals.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |         '0'...'9' => true,
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/literals.rs:41:34
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn parse_string(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/operators.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_assign(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:13:31
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn parse_add(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:18:31
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn parse_sub(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:23:31
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn parse_mul(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:28:31
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn parse_div(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:33:31
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn parse_not(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn parse_or(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn parse_and(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:48:30
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn parse_eq(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn parse_ne(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:58:30
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_lt(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:63:30
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub fn parse_le(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:68:30
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn parse_gt(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/operators.rs:73:30
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn parse_ge(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/parentheses.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_lparen(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/parentheses.rs:13:34
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn parse_rparen(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/separator.rs:6:37
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn parse_separator(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/unknown.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn parse_unknown(source: &mut io::SourceFlexIterator) -> common::Status<ast::Token> {
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/utils.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     source: &mut io::SourceFlexIterator,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> xlc/src/tokenizer/words.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |     source: &mut io::SourceFlexIterator,
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::SourceFlexIterator`
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/words.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 |         '_' | 'a'...'z' | 'A'...'Z' => true,
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/words.rs:11:30
[INFO] [stdout]    |
[INFO] [stdout] 11 |         '_' | 'a'...'z' | 'A'...'Z' => true,
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/words.rs:19:22
[INFO] [stdout]    |
[INFO] [stdout] 19 |             '_' | 'a'...'z' | 'A'...'Z' | '0'...'9' => {
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/words.rs:19:34
[INFO] [stdout]    |
[INFO] [stdout] 19 |             '_' | 'a'...'z' | 'A'...'Z' | '0'...'9' => {
[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: `...` range patterns are deprecated
[INFO] [stdout]   --> xlc/src/tokenizer/words.rs:19:46
[INFO] [stdout]    |
[INFO] [stdout] 19 |             '_' | 'a'...'z' | 'A'...'Z' | '0'...'9' => {
[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] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/assignment.rs:63:44
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn emit_assignment_strlit(&mut self, ir_srcid: &String, xl_dstid: &String) {
[INFO] [stdout]    |                               ---------
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               `self` declared here, outside of the associated function body
[INFO] [stdout]    |                               `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 62 |         let ir_srcid =
[INFO] [stdout] 63 |             &Self::get_decorated_str_ir_id(Self::get_str_decl_by_ir_id(&self.str_decls, ir_srcid));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> xlc/src/emitter/llvm/assignment.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl<'a> emitter::Emitter<'a> {
[INFO] [stdout]    |      -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 63 |             &Self::get_decorated_str_ir_id(Self::get_str_decl_by_ir_id(&self.str_decls, ir_srcid));
[INFO] [stdout]    |                                            ------------------------------------------------------
[INFO] [stdout]    |                                            |                           |
[INFO] [stdout]    |                                            |                           immutable borrow occurs here
[INFO] [stdout]    |                                            argument requires that `self.str_decls` is borrowed for `'a`
[INFO] [stdout] 64 |         self.emit_assignment_str(ir_srcid, xl_dstid);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/assignment.rs:73:24
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn emit_assignment_bool(&mut self, ir_srcid: &String, xl_dstvar: &String) {
[INFO] [stdout]    |                             ---------
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             `self` declared here, outside of the associated function body
[INFO] [stdout]    |                             `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 73 |         let ir_dstid = Self::get_ir_id_by_xl_id(&self.var_decls, xl_dstvar);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/assignment.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 81 |     fn emit_assignment_int(&mut self, ir_srcid: &String, xl_dstvar: &String) {
[INFO] [stdout]    |                            ---------
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            `self` declared here, outside of the associated function body
[INFO] [stdout]    |                            `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 82 |         let ir_dstid = Self::get_ir_id_by_xl_id(&self.var_decls, xl_dstvar);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/assignment.rs:91:24
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn emit_assignment_str(&mut self, ir_srcid: &String, xl_dstvar: &String) {
[INFO] [stdout]    |                            ---------
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            `self` declared here, outside of the associated function body
[INFO] [stdout]    |                            `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 91 |         let ir_dstid = Self::get_ir_id_by_xl_id(&self.var_decls, xl_dstvar);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]    --> xlc/src/emitter/llvm/expression.rs:273:21
[INFO] [stdout]     |
[INFO] [stdout] 272 |     fn push_var(&mut self, step: &'a cdata::Step<'a>, xl_id: &String) {
[INFO] [stdout]     |                 ---------
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 `self` declared here, outside of the associated function body
[INFO] [stdout]     |                 `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 273 |         let ir_id = Self::get_ir_id_by_xl_id(&self.var_decls, xl_id).clone();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]    --> xlc/src/emitter/llvm/expression.rs:296:21
[INFO] [stdout]     |
[INFO] [stdout] 295 |     fn push_strlit(&mut self, xl_val: &String) {
[INFO] [stdout]     |                    ---------
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    `self` declared here, outside of the associated function body
[INFO] [stdout]     |                    `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 296 |         let ir_id = Self::get_ir_id_by_xl_val(&self.str_decls, xl_val).clone();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/print.rs:62:44
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn emit_print_strlit(&mut self, ir_id: &String) {
[INFO] [stdout]    |                          ---------
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          `self` declared here, outside of the associated function body
[INFO] [stdout]    |                          `self` is a reference that is only valid in the associated function body
[INFO] [stdout] 61 |         let ir_id =
[INFO] [stdout] 62 |             &Self::get_decorated_str_ir_id(Self::get_str_decl_by_ir_id(&self.str_decls, ir_id));
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> xlc/src/emitter/llvm/print.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<'a> emitter::Emitter<'a> {
[INFO] [stdout]    |      -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 62 |             &Self::get_decorated_str_ir_id(Self::get_str_decl_by_ir_id(&self.str_decls, ir_id));
[INFO] [stdout]    |                                            ---------------------------------------------------
[INFO] [stdout]    |                                            |                           |
[INFO] [stdout]    |                                            |                           immutable borrow occurs here
[INFO] [stdout]    |                                            argument requires that `self.str_decls` is borrowed for `'a`
[INFO] [stdout] 63 |         self.emit_print_str(ir_id);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/strlits.rs:34:24
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn build_str_decls(&mut self) {
[INFO] [stdout]    |                        ---------
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        `self` declared here, outside of the associated function body
[INFO] [stdout]    |                        `self` is a reference that is only valid in the associated function body
[INFO] [stdout] ...
[INFO] [stdout] 34 |                     if Self::find_str_decl_by_xl_val(&self.str_decls, xl_val).is_none() {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `self.str_decls` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> xlc/src/emitter/llvm/strlits.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl<'a> emitter::Emitter<'a> {
[INFO] [stdout]    |      -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 34 |                     if Self::find_str_decl_by_xl_val(&self.str_decls, xl_val).is_none() {
[INFO] [stdout]    |                        ------------------------------------------------------
[INFO] [stdout]    |                        |                             |
[INFO] [stdout]    |                        |                             immutable borrow occurs here
[INFO] [stdout]    |                        argument requires that `self.str_decls` is borrowed for `'a`
[INFO] [stdout] 35 |                         let ir_id = format!("@{}", Self::get_next_id(&mut self.strlit_id));
[INFO] [stdout] 36 |                         self.str_decls.push(strdecl::StrDecl::from(xl_val).with_id(ir_id));
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0521]: borrowed data escapes outside of associated function
[INFO] [stdout]   --> xlc/src/emitter/llvm/vars.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn build_var_decls(&mut self) {
[INFO] [stdout]    |                        ---------
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        `self` declared here, outside of the associated function body
[INFO] [stdout]    |                        `self` is a reference that is only valid in the associated function body
[INFO] [stdout] ...
[INFO] [stdout] 28 |                     if Self::find_var_decl_by_xl_id(&self.var_decls, xl_id).is_none() {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self` escapes the associated function body here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `self.var_decls` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> xlc/src/emitter/llvm/vars.rs:36:25
[INFO] [stdout]    |
[INFO] [stdout] 22 |   impl<'a> emitter::Emitter<'a> {
[INFO] [stdout]    |        -- lifetime `'a` defined here
[INFO] [stdout] ...
[INFO] [stdout] 28 |                       if Self::find_var_decl_by_xl_id(&self.var_decls, xl_id).is_none() {
[INFO] [stdout]    |                          ----------------------------------------------------
[INFO] [stdout]    |                          |                            |
[INFO] [stdout]    |                          |                            immutable borrow occurs here
[INFO] [stdout]    |                          argument requires that `self.var_decls` is borrowed for `'a`
[INFO] [stdout] ...
[INFO] [stdout] 36 | /                         self.var_decls.push(
[INFO] [stdout] 37 | |                             vardecl::VarDecl::from(xl_id).with_id(ir_id).with_type(
[INFO] [stdout] 38 | |                                 ir_type,
[INFO] [stdout] 39 | |                             ),
[INFO] [stdout] 40 | |                         );
[INFO] [stdout]    | |_________________________^ mutable borrow occurs here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 13 previous errors; 73 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0502, E0521.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xlc`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "acdf471cc77c7c21ab9905a92ab6f0eecdba67ff26569cb2c46ecf972d441f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acdf471cc77c7c21ab9905a92ab6f0eecdba67ff26569cb2c46ecf972d441f7c", kill_on_drop: false }`
[INFO] [stdout] acdf471cc77c7c21ab9905a92ab6f0eecdba67ff26569cb2c46ecf972d441f7c
