[INFO] crate stutter-rs 0.1.1 is already in cache
[INFO] extracting crate stutter-rs 0.1.1 into work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/reg/stutter-rs/0.1.1
[INFO] extracting crate stutter-rs 0.1.1 into work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/reg/stutter-rs/0.1.1
[INFO] validating manifest of stutter-rs-0.1.1 on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of stutter-rs-0.1.1 on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing stutter-rs-0.1.1
[INFO] finished frobbing stutter-rs-0.1.1
[INFO] frobbed toml for stutter-rs-0.1.1 written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/reg/stutter-rs/0.1.1/Cargo.toml
[INFO] started frobbing stutter-rs-0.1.1
[INFO] finished frobbing stutter-rs-0.1.1
[INFO] frobbed toml for stutter-rs-0.1.1 written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/reg/stutter-rs/0.1.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking stutter-rs-0.1.1 against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-4/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/reg/stutter-rs/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b1927fec6b1e5bf0125c452dc857c81a3e843810193c42303e234e56719d52c4
[INFO] running `"docker" "start" "-a" "b1927fec6b1e5bf0125c452dc857c81a3e843810193c42303e234e56719d52c4"`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Checking cactus v1.0.4
[INFO] [stderr]     Checking stutter-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             n: tag!("null") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             n: tag!("true") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |             n: tag!("false") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/ast/function.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn eq(&self, other: &Function) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/eval/types.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |             if let Value::Function(ref func) = frame.borrow().returns {
[INFO] [stderr]     |                                        ^^^^ help: consider prefixing with an underscore: `_func`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             n: tag!("null") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             n: tag!("true") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |             n: tag!("false") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/ast/function.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn eq(&self, other: &Function) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/eval/types.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |             if let Value::Function(ref func) = frame.borrow().returns {
[INFO] [stderr]     |                                        ^^^^ help: consider prefixing with an underscore: `_func`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:54
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax, box_patterns, fn_traits, nll, iterator_step_by)]
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `next_id` should have an upper case name
[INFO] [stderr]   --> src/eval/types.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | static mut next_id: i32 = 0;
[INFO] [stderr]    |            ^^^^^^^ help: convert the identifier to upper case: `NEXT_ID`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:54
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax, box_patterns, fn_traits, nll, iterator_step_by)]
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `next_id` should have an upper case name
[INFO] [stderr]   --> src/eval/types.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | static mut next_id: i32 = 0;
[INFO] [stderr]    |            ^^^^^^^ help: convert the identifier to upper case: `NEXT_ID`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             n: tag!("null") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             n: tag!("true") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |             n: tag!("false") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/ast/function.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn eq(&self, other: &Function) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/eval/types.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |             if let Value::Function(ref func) = frame.borrow().returns {
[INFO] [stderr]     |                                        ^^^^ help: consider prefixing with an underscore: `_func`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             n: tag!("null") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             n: tag!("true") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/ast/parse.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |             n: tag!("false") >>
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/ast/function.rs:45:18
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn eq(&self, other: &Function) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: consider prefixing with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/eval/types.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |             if let Value::Function(ref func) = frame.borrow().returns {
[INFO] [stderr]     |                                        ^^^^ help: consider prefixing with an underscore: `_func`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:54
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax, box_patterns, fn_traits, nll, iterator_step_by)]
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `next_id` should have an upper case name
[INFO] [stderr]   --> src/eval/types.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | static mut next_id: i32 = 0;
[INFO] [stderr]    |            ^^^^^^^ help: convert the identifier to upper case: `NEXT_ID`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:54
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax, box_patterns, fn_traits, nll, iterator_step_by)]
[INFO] [stderr]   |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `next_id` should have an upper case name
[INFO] [stderr]   --> src/eval/types.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | static mut next_id: i32 = 0;
[INFO] [stderr]    |            ^^^^^^^ help: convert the identifier to upper case: `NEXT_ID`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.58s
[INFO] running `"docker" "inspect" "b1927fec6b1e5bf0125c452dc857c81a3e843810193c42303e234e56719d52c4"`
[INFO] running `"docker" "rm" "-f" "b1927fec6b1e5bf0125c452dc857c81a3e843810193c42303e234e56719d52c4"`
[INFO] [stdout] b1927fec6b1e5bf0125c452dc857c81a3e843810193c42303e234e56719d52c4