[INFO] updating cached repository tiffany352/tifflang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tiffany352/tifflang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tiffany352/tifflang" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/tiffany352/tifflang"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/tiffany352/tifflang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tiffany352/tifflang" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/tiffany352/tifflang"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/tiffany352/tifflang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 61df2ad44a8e3c930f1913562be669d5f30cfe90
[INFO] sha for GitHub repo tiffany352/tifflang: 61df2ad44a8e3c930f1913562be669d5f30cfe90
[INFO] validating manifest of tiffany352/tifflang on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tiffany352/tifflang on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tiffany352/tifflang
[INFO] finished frobbing tiffany352/tifflang
[INFO] frobbed toml for tiffany352/tifflang written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/tiffany352/tifflang/Cargo.toml
[INFO] started frobbing tiffany352/tifflang
[INFO] finished frobbing tiffany352/tifflang
[INFO] frobbed toml for tiffany352/tifflang written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/tiffany352/tifflang/Cargo.toml
[INFO] crate tiffany352/tifflang already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tiffany352/tifflang against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-7/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/tiffany352/tifflang:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 144c7065ae0286e72d5a3ae38f75c16d89602a12339d7122fb346732dd3f6a16
[INFO] running `"docker" "start" "-a" "144c7065ae0286e72d5a3ae38f75c16d89602a12339d7122fb346732dd3f6a16"`
[INFO] [stderr]     Checking web-assembler v0.1.0
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking tifflang v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/parser.rs:7:39
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub type TokenIterator = Peekable<Box<Iterator<Item=Span<Token>>>>;
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Span<Token>>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:19
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let iter: Box<Iterator<Item=Span<Token>>> = Box::new(tokens.into_iter());
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Span<Token>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/parser.rs:7:39
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub type TokenIterator = Peekable<Box<Iterator<Item=Span<Token>>>>;
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Span<Token>>`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:19
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let iter: Box<Iterator<Item=Span<Token>>> = Box::new(tokens.into_iter());
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=Span<Token>>`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/typecheck.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | /     Function {
[INFO] [stderr] 47 | |         result: Box<Type>,
[INFO] [stderr] 48 | |         args: Vec<Type>,
[INFO] [stderr] 49 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/typecheck.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | /     Function {
[INFO] [stderr] 47 | |         result: Box<Type>,
[INFO] [stderr] 48 | |         args: Vec<Type>,
[INFO] [stderr] 49 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.14s
[INFO] running `"docker" "inspect" "144c7065ae0286e72d5a3ae38f75c16d89602a12339d7122fb346732dd3f6a16"`
[INFO] running `"docker" "rm" "-f" "144c7065ae0286e72d5a3ae38f75c16d89602a12339d7122fb346732dd3f6a16"`
[INFO] [stdout] 144c7065ae0286e72d5a3ae38f75c16d89602a12339d7122fb346732dd3f6a16