[INFO] updating cached repository Nyrox/ToyLang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Nyrox/ToyLang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Nyrox/ToyLang" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/Nyrox/ToyLang"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/Nyrox/ToyLang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Nyrox/ToyLang" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/Nyrox/ToyLang"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/Nyrox/ToyLang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4b0cd47d8abcfaeaa3fd42aeddebd2626c2d0fb7
[INFO] sha for GitHub repo Nyrox/ToyLang: 4b0cd47d8abcfaeaa3fd42aeddebd2626c2d0fb7
[INFO] validating manifest of Nyrox/ToyLang on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Nyrox/ToyLang on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Nyrox/ToyLang
[INFO] finished frobbing Nyrox/ToyLang
[INFO] frobbed toml for Nyrox/ToyLang written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/Nyrox/ToyLang/Cargo.toml
[INFO] started frobbing Nyrox/ToyLang
[INFO] finished frobbing Nyrox/ToyLang
[INFO] frobbed toml for Nyrox/ToyLang written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/Nyrox/ToyLang/Cargo.toml
[INFO] crate Nyrox/ToyLang already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Nyrox/ToyLang against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/Nyrox/ToyLang:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b783ec4b9571fdca3042bc0d0c964e94f1704c9330f4c73c30acc2b112ebccfa
[INFO] running `"docker" "start" "-a" "b783ec4b9571fdca3042bc0d0c964e94f1704c9330f4c73c30acc2b112ebccfa"`
[INFO] [stderr]     Checking lang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/compiler.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/compiler.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 _ => panic!()
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/compiler.rs:67:3
[INFO] [stderr]    |
[INFO] [stderr] 67 |         _ => panic!()
[INFO] [stderr]    |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/ast.rs:99:31
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Token::IdentifierToken(ref id) => {
[INFO] [stderr]    |                                        ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]    --> src/ast.rs:122:31
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Token::IdentifierToken(ref id) => {
[INFO] [stderr]     |                                        ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `identifier`
[INFO] [stderr]    --> src/ast.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 let identifier = cl.next().unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^ help: consider prefixing with an underscore: `_identifier`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ast.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let mut arg = match *self.it.next().unwrap() {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/compiler.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CALLEXT`
[INFO] [stderr]  --> src/compiler.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     CALLEXT,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `placement_in_syntax`
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(placement_in_syntax)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `collection_placement`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(collection_placement)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: Could not compile `lang`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/compiler.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 _ => panic!()
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/compiler.rs:67:3
[INFO] [stderr]    |
[INFO] [stderr] 67 |         _ => panic!()
[INFO] [stderr]    |         ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/ast.rs:99:31
[INFO] [stderr]    |
[INFO] [stderr] 99 |             Token::IdentifierToken(ref id) => {
[INFO] [stderr]    |                                        ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]    --> src/ast.rs:122:31
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Token::IdentifierToken(ref id) => {
[INFO] [stderr]     |                                        ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `identifier`
[INFO] [stderr]    --> src/ast.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 let identifier = cl.next().unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^ help: consider prefixing with an underscore: `_identifier`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ast.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let mut arg = match *self.it.next().unwrap() {
[INFO] [stderr]     |             ----^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CALLEXT`
[INFO] [stderr]  --> src/compiler.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     CALLEXT,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `placement_in_syntax`
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(placement_in_syntax)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `collection_placement`
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(collection_placement)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: Could not compile `lang`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b783ec4b9571fdca3042bc0d0c964e94f1704c9330f4c73c30acc2b112ebccfa"`
[INFO] running `"docker" "rm" "-f" "b783ec4b9571fdca3042bc0d0c964e94f1704c9330f4c73c30acc2b112ebccfa"`
[INFO] [stdout] b783ec4b9571fdca3042bc0d0c964e94f1704c9330f4c73c30acc2b112ebccfa