[INFO] cloning repository https://github.com/ear7h/lang1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ear7h/lang1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fear7h%2Flang1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fear7h%2Flang1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7420757c926afd63171f38ef5df08cfa56da2ee6
[INFO] checking ear7h/lang1 against try#b4c55082edd8dec08ce8af276d7054d9c4db20c4 for pr-147984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fear7h%2Flang1" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ear7h/lang1
[INFO] finished tweaking git repo https://github.com/ear7h/lang1
[INFO] tweaked toml for git repo https://github.com/ear7h/lang1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ear7h/lang1 on toolchain b4c55082edd8dec08ce8af276d7054d9c4db20c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ear7h/lang1 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" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string-interner v0.12.2
[INFO] [stderr]   Downloaded quickscope v0.1.6
[INFO] [stderr]   Downloaded thiserror-impl v1.0.26
[INFO] [stderr]   Downloaded faerie v0.16.0
[INFO] [stderr]   Downloaded thiserror v1.0.26
[INFO] [stderr]   Downloaded target-lexicon v0.11.2
[INFO] [stderr]   Downloaded goblin v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4aa5fa9373981671774d1b535abc5af6065ad169bebc726b1d7b6d2c75f4e8e
[INFO] running `Command { std: "docker" "start" "-a" "a4aa5fa9373981671774d1b535abc5af6065ad169bebc726b1d7b6d2c75f4e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4aa5fa9373981671774d1b535abc5af6065ad169bebc726b1d7b6d2c75f4e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4aa5fa9373981671774d1b535abc5af6065ad169bebc726b1d7b6d2c75f4e8e", kill_on_drop: false }`
[INFO] [stdout] a4aa5fa9373981671774d1b535abc5af6065ad169bebc726b1d7b6d2c75f4e8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3c7a67139fb03b57fb7c6b841f9559c61cb7bacf397fac747e65e31af735822
[INFO] running `Command { std: "docker" "start" "-a" "f3c7a67139fb03b57fb7c6b841f9559c61cb7bacf397fac747e65e31af735822", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling target-lexicon v0.11.2
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking quickscope v0.1.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling peg-macros v0.7.0
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking peg v0.7.0
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking goblin v0.3.4
[INFO] [stderr]     Checking string-interner v0.12.2
[INFO] [stderr]     Checking faerie v0.16.0
[INFO] [stderr]     Checking lang1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   |            ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:56:21
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 f : box f,
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 56 -                 f : box f,
[INFO] [stdout] 56 +                 f : Box::new(f),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:86:32
[INFO] [stdout]    |
[INFO] [stdout] 86 |             Expr::Match{ val : box val, arms }
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 86 -             Expr::Match{ val : box val, arms }
[INFO] [stdout] 86 +             Expr::Match{ val : Box::new(val), arms }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:96:44
[INFO] [stdout]    |
[INFO] [stdout] 96 |             Expr::Abs{ params, ret, body : box body }
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 96 -             Expr::Abs{ params, ret, body : box body }
[INFO] [stdout] 96 +             Expr::Abs{ params, ret, body : Box::new(body) }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:101:36
[INFO] [stdout]     |
[INFO] [stdout] 101 |             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 101 -             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 101 +             Expr::Let{name, bound: Box::new(bound), val: box val}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:101:52
[INFO] [stdout]     |
[INFO] [stdout] 101 |             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 101 -             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 101 +             Expr::Let{name, bound: box bound, val: Box::new(val)}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:113:44
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 113 -                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 113 +                     Expr::Let{name, bound: Box::new(bound), val: box val}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:113:60
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                                            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 113 -                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 113 +                     Expr::Let{name, bound: box bound, val: Box::new(val)}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:56:21
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 f : box f,
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 56 -                 f : box f,
[INFO] [stdout] 56 +                 f : Box::new(f),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:86:32
[INFO] [stdout]    |
[INFO] [stdout] 86 |             Expr::Match{ val : box val, arms }
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 86 -             Expr::Match{ val : box val, arms }
[INFO] [stdout] 86 +             Expr::Match{ val : Box::new(val), arms }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/parser.rs:96:44
[INFO] [stdout]    |
[INFO] [stdout] 96 |             Expr::Abs{ params, ret, body : box body }
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 96 -             Expr::Abs{ params, ret, body : box body }
[INFO] [stdout] 96 +             Expr::Abs{ params, ret, body : Box::new(body) }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:101:36
[INFO] [stdout]     |
[INFO] [stdout] 101 |             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 101 -             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 101 +             Expr::Let{name, bound: Box::new(bound), val: box val}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:101:52
[INFO] [stdout]     |
[INFO] [stdout] 101 |             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 101 -             Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 101 +             Expr::Let{name, bound: box bound, val: Box::new(val)}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:113:44
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 113 -                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 113 +                     Expr::Let{name, bound: Box::new(bound), val: box val}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `bindings_after_at` has been stable since 1.56.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(bindings_after_at)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:113:60
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout]     |                                                            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 113 -                     Expr::Let{name, bound: box bound, val: box val}
[INFO] [stdout] 113 +                     Expr::Let{name, bound: box bound, val: Box::new(val)}
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:331:27
[INFO] [stdout]     |
[INFO] [stdout] 331 |                     val : box Expr::Int(10),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 331 -                     val : box Expr::Int(10),
[INFO] [stdout] 331 +                     val : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:340:27
[INFO] [stdout]     |
[INFO] [stdout] 340 |                     val : box Expr::Int(10),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 340 -                     val : box Expr::Int(10),
[INFO] [stdout] 340 +                     val : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:355:27
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     val : box Expr::Int(10),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 355 -                     val : box Expr::Int(10),
[INFO] [stdout] 355 +                     val : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:382:28
[INFO] [stdout]     |
[INFO] [stdout] 382 |                     body : box Expr::Int(10),
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 382 -                     body : box Expr::Int(10),
[INFO] [stdout] 382 +                     body : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:400:24
[INFO] [stdout]     |
[INFO] [stdout] 400 |                     f: box Expr::Var("f".to_string()),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 400 -                     f: box Expr::Var("f".to_string()),
[INFO] [stdout] 400 +                     f: Box::new(Expr::Var("f".to_string())),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:410:24
[INFO] [stdout]     |
[INFO] [stdout] 410 |                     f: box Expr::Var("f".to_string()),
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 410 -                     f: box Expr::Var("f".to_string()),
[INFO] [stdout] 410 +                     f: Box::new(Expr::Var("f".to_string())),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:428:31
[INFO] [stdout]     |
[INFO] [stdout] 428 |                           body: box Expr::Tuple(vec![
[INFO] [stdout]     |  _______________________________^
[INFO] [stdout] 429 | |                             Expr::Bool(true),
[INFO] [stdout] 430 | |                             Expr::Var("x".to_string())
[INFO] [stdout] 431 | |                         ]),
[INFO] [stdout]     | |__________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 428 ~                         body: Box::new(Expr::Tuple(vec![
[INFO] [stdout] 429 |                             Expr::Bool(true),
[INFO] [stdout] 430 |                             Expr::Var("x".to_string())
[INFO] [stdout] 431 ~                         ])),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:420:24
[INFO] [stdout]     |
[INFO] [stdout] 420 |                       f: box Expr::Abs{
[INFO] [stdout]     |  ________________________^
[INFO] [stdout] 421 | |                         params : vec![
[INFO] [stdout] 422 | |                             ("x".to_string(), Type::Int),
[INFO] [stdout] 423 | |                         ],
[INFO] [stdout] ...   |
[INFO] [stdout] 431 | |                         ]),
[INFO] [stdout] 432 | |                     },
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 420 ~                     f: Box::new(Expr::Abs{
[INFO] [stdout] 421 |                         params : vec![
[INFO] [stdout] ...
[INFO] [stdout] 431 |                         ]),
[INFO] [stdout] 432 ~                     }),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:454:29
[INFO] [stdout]     |
[INFO] [stdout] 454 |                     bound : box Expr::Int(10),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 454 -                     bound : box Expr::Int(10),
[INFO] [stdout] 454 +                     bound : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:455:27
[INFO] [stdout]     |
[INFO] [stdout] 455 |                     val : box Expr::Var("hello".to_string()),
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 455 -                     val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 455 +                     val : Box::new(Expr::Var("hello".to_string())),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:462:29
[INFO] [stdout]     |
[INFO] [stdout] 462 |                     bound : box Expr::Int(10),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 462 -                     bound : box Expr::Int(10),
[INFO] [stdout] 462 +                     bound : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:465:33
[INFO] [stdout]     |
[INFO] [stdout] 465 |                         bound : box Expr::Int(2),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 465 -                         bound : box Expr::Int(2),
[INFO] [stdout] 465 +                         bound : Box::new(Expr::Int(2)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:466:31
[INFO] [stdout]     |
[INFO] [stdout] 466 |                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 466 -                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 466 +                         val : Box::new(Expr::Var("hello".to_string())),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:463:27
[INFO] [stdout]     |
[INFO] [stdout] 463 |                       val : box Expr::Let{
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 464 | |                         name: String::from("y"),
[INFO] [stdout] 465 | |                         bound : box Expr::Int(2),
[INFO] [stdout] 466 | |                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 467 | |                     },
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 463 ~                     val : Box::new(Expr::Let{
[INFO] [stdout] 464 |                         name: String::from("y"),
[INFO] [stdout] 465 |                         bound : box Expr::Int(2),
[INFO] [stdout] 466 |                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 467 ~                     }),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:476:29
[INFO] [stdout]     |
[INFO] [stdout] 476 |                     bound : box Expr::Int(10),
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 476 -                     bound : box Expr::Int(10),
[INFO] [stdout] 476 +                     bound : Box::new(Expr::Int(10)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:479:33
[INFO] [stdout]     |
[INFO] [stdout] 479 |                         bound : box Expr::Int(2),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 479 -                         bound : box Expr::Int(2),
[INFO] [stdout] 479 +                         bound : Box::new(Expr::Int(2)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:480:31
[INFO] [stdout]     |
[INFO] [stdout] 480 |                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 480 -                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 480 +                         val : Box::new(Expr::Var("hello".to_string())),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/parser.rs:477:27
[INFO] [stdout]     |
[INFO] [stdout] 477 |                       val : box Expr::Let{
[INFO] [stdout]     |  ___________________________^
[INFO] [stdout] 478 | |                         name: String::from("y"),
[INFO] [stdout] 479 | |                         bound : box Expr::Int(2),
[INFO] [stdout] 480 | |                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 481 | |                     },
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 477 ~                     val : Box::new(Expr::Let{
[INFO] [stdout] 478 |                         name: String::from("y"),
[INFO] [stdout] 479 |                         bound : box Expr::Int(2),
[INFO] [stdout] 480 |                         val : box Expr::Var("hello".to_string()),
[INFO] [stdout] 481 ~                     }),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `bindings_after_at` has been stable since 1.56.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(bindings_after_at)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lang1` (lib test) due to 26 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lang1` (lib) due to 8 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f3c7a67139fb03b57fb7c6b841f9559c61cb7bacf397fac747e65e31af735822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3c7a67139fb03b57fb7c6b841f9559c61cb7bacf397fac747e65e31af735822", kill_on_drop: false }`
[INFO] [stdout] f3c7a67139fb03b57fb7c6b841f9559c61cb7bacf397fac747e65e31af735822
