[INFO] cloning repository https://github.com/yui-knk/type_lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yui-knk/type_lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyui-knk%2Ftype_lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyui-knk%2Ftype_lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed69f34ad8701719671089770ae0063e4ac1aa6a
[INFO] checking yui-knk/type_lang against master#b389b0ab72cb0aa9acf4df0ae0c0e12090782da9 for pr-128351-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyui-knk%2Ftype_lang" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yui-knk/type_lang on toolchain b389b0ab72cb0aa9acf4df0ae0c0e12090782da9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yui-knk/type_lang
[INFO] finished tweaking git repo https://github.com/yui-knk/type_lang
[INFO] tweaked toml for git repo https://github.com/yui-knk/type_lang written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yui-knk/type_lang 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" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c48f66a87ec771274e95469189d0897ce863f02ce2464e925ddb874b987fe95f
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+b389b0ab72cb0aa9acf4df0ae0c0e12090782da9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
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[INFO] [stderr]    Compiling rand_os v0.1.2
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[INFO] [stderr]    Compiling fake-simd v0.1.2
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[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling bit-set v0.5.0
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling lalrpop-util v0.16.3
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling syn v0.15.26
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[INFO] [stderr]     Checking clap v2.32.0
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[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling block-buffer v0.7.2
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.16.3
[INFO] [stderr]    Compiling type_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:6382:5
[INFO] [stdout]      |
[INFO] [stdout] 6382 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 6382 -     (__0)
[INFO] [stdout] 6382 +     __0
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:6393:5
[INFO] [stdout]      |
[INFO] [stdout] 6393 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 6393 -     (__0)
[INFO] [stdout] 6393 +     __0
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/node.rs:242:36
[INFO] [stdout]     |
[INFO] [stdout] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 242 | pub fn print_with_indent(buf: &mut dyn Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:6382:5
[INFO] [stdout]      |
[INFO] [stdout] 6382 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 6382 -     (__0)
[INFO] [stdout] 6382 +     __0
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:6393:5
[INFO] [stdout]      |
[INFO] [stdout] 6393 |     (__0)
[INFO] [stdout]      |     ^   ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 6393 -     (__0)
[INFO] [stdout] 6393 +     __0
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::__parse__Type::TypeParser`
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:6197:9
[INFO] [stdout]      |
[INFO] [stdout] 6197 | pub use self::__parse__Type::TypeParser;
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/node.rs:242:36
[INFO] [stdout]     |
[INFO] [stdout] 242 | pub fn print_with_indent(buf: &mut Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stdout]     |                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 242 | pub fn print_with_indent(buf: &mut dyn Write, node: &Node, level: usize, space_count: usize) -> std::io::Result<()> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/node.rs:255:40
[INFO] [stdout]     |
[INFO] [stdout] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stdout]     |                                        ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:280:18
[INFO] [stdout]     |
[INFO] [stdout] 280 |         Succ(ref node1) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:284:18
[INFO] [stdout]     |
[INFO] [stdout] 284 |         Pred(ref node1) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:288:20
[INFO] [stdout]     |
[INFO] [stdout] 288 |         Iszero(ref node1) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/node.rs:292:20
[INFO] [stdout]     |
[INFO] [stdout] 292 |         Record(ref f) => {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:296:24
[INFO] [stdout]     |
[INFO] [stdout] 296 |         Projection(ref node1, ref label) => {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]    --> src/node.rs:296:35
[INFO] [stdout]     |
[INFO] [stdout] 296 |         Projection(ref node1, ref label) => {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/node.rs:311:17
[INFO] [stdout]     |
[INFO] [stdout] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:311:26
[INFO] [stdout]     |
[INFO] [stdout] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/node.rs:311:37
[INFO] [stdout]     |
[INFO] [stdout] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stdout]     |                                     ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:315:18
[INFO] [stdout]     |
[INFO] [stdout] 315 |         Case(ref node1, ref cases) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cases`
[INFO] [stdout]    --> src/node.rs:315:29
[INFO] [stdout]     |
[INFO] [stdout] 315 |         Case(ref node1, ref cases) => {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:319:16
[INFO] [stdout]     |
[INFO] [stdout] 319 |         As(ref node1, ref ty) => {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/node.rs:319:27
[INFO] [stdout]     |
[INFO] [stdout] 319 |         As(ref node1, ref ty) => {
[INFO] [stdout]     |                           ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:323:17
[INFO] [stdout]     |
[INFO] [stdout] 323 |         Fix(ref node1) => {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/node.rs:343:17
[INFO] [stdout]     |
[INFO] [stdout] 343 |         Loc(ref l) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let _ = print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let _ = print_with_indent(&mut io::stdout(), &result, 0, 2);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/node.rs:255:40
[INFO] [stdout]     |
[INFO] [stdout] 255 |         Lambda(ref var, ref node1, ref ty) => {
[INFO] [stdout]     |                                        ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:280:18
[INFO] [stdout]     |
[INFO] [stdout] 280 |         Succ(ref node1) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:284:18
[INFO] [stdout]     |
[INFO] [stdout] 284 |         Pred(ref node1) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:288:20
[INFO] [stdout]     |
[INFO] [stdout] 288 |         Iszero(ref node1) => {
[INFO] [stdout]     |                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/node.rs:292:20
[INFO] [stdout]     |
[INFO] [stdout] 292 |         Record(ref f) => {
[INFO] [stdout]     |                    ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:296:24
[INFO] [stdout]     |
[INFO] [stdout] 296 |         Projection(ref node1, ref label) => {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]    --> src/node.rs:296:35
[INFO] [stdout]     |
[INFO] [stdout] 296 |         Projection(ref node1, ref label) => {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tag`
[INFO] [stdout]    --> src/node.rs:311:17
[INFO] [stdout]     |
[INFO] [stdout] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_tag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:311:26
[INFO] [stdout]     |
[INFO] [stdout] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stdout]     |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/node.rs:311:37
[INFO] [stdout]     |
[INFO] [stdout] 311 |         Tag(ref tag, ref node1, ref ty) => {
[INFO] [stdout]     |                                     ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:315:18
[INFO] [stdout]     |
[INFO] [stdout] 315 |         Case(ref node1, ref cases) => {
[INFO] [stdout]     |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cases`
[INFO] [stdout]    --> src/node.rs:315:29
[INFO] [stdout]     |
[INFO] [stdout] 315 |         Case(ref node1, ref cases) => {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_cases`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:319:16
[INFO] [stdout]     |
[INFO] [stdout] 319 |         As(ref node1, ref ty) => {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/node.rs:319:27
[INFO] [stdout]     |
[INFO] [stdout] 319 |         As(ref node1, ref ty) => {
[INFO] [stdout]     |                           ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node1`
[INFO] [stdout]    --> src/node.rs:323:17
[INFO] [stdout]     |
[INFO] [stdout] 323 |         Fix(ref node1) => {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_node1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l`
[INFO] [stdout]    --> src/node.rs:343:17
[INFO] [stdout]     |
[INFO] [stdout] 343 |         Loc(ref l) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_l`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `to_triple` is never used
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:7289:8
[INFO] [stdout]      |
[INFO] [stdout] 7288 | pub trait __ToTriple<'input, > {
[INFO] [stdout]      |           ---------- associated function in this trait
[INFO] [stdout] 7289 |     fn to_triple(value: Self) -> Result<(usize,Token<'input>,usize), __lalrpop_util::ParseError<usize, Token<'input>, &'static str>>;
[INFO] [stdout]      |        ^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/type_lang-cdf0cdc4db4aa171/out/parser.rs:4450:16
[INFO] [stdout]      |
[INFO] [stdout] 4449 |     impl TypeParser {
[INFO] [stdout]      |     --------------- associated function in this implementation
[INFO] [stdout] 4450 |         pub fn new() -> TypeParser {
[INFO] [stdout]      |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.20s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lalrpop v0.16.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "27784470a5fa929a305a5fc9c734b8eb7263eac881f4ea77a7d4884084ab81c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27784470a5fa929a305a5fc9c734b8eb7263eac881f4ea77a7d4884084ab81c5", kill_on_drop: false }`
[INFO] [stdout] 27784470a5fa929a305a5fc9c734b8eb7263eac881f4ea77a7d4884084ab81c5
