[INFO] crate genco 0.3.29 is already in cache
[INFO] extracting crate genco 0.3.29 into work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/reg/genco/0.3.29
[INFO] extracting crate genco 0.3.29 into work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/reg/genco/0.3.29
[INFO] validating manifest of genco-0.3.29 on toolchain master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of genco-0.3.29 on toolchain try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing genco-0.3.29
[INFO] finished frobbing genco-0.3.29
[INFO] frobbed toml for genco-0.3.29 written to work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/reg/genco/0.3.29/Cargo.toml
[INFO] started frobbing genco-0.3.29
[INFO] finished frobbing genco-0.3.29
[INFO] frobbed toml for genco-0.3.29 written to work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/reg/genco/0.3.29/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking genco-0.3.29 against try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af for pr-61753
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61753/worker-1/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/reg/genco/0.3.29:/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" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a3d4f1088cb85245e4db1bf5913195417486ffb399e4233f5d1a0f437fa854db
[INFO] running `"docker" "start" "-a" "a3d4f1088cb85245e4db1bf5913195417486ffb399e4233f5d1a0f437fa854db"`
[INFO] [stderr]     Checking genco v0.3.29 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/formatter.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     write: &'write mut fmt::Write,
[INFO] [stderr]    |                        ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Write`
[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/formatter.rs:30:28
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new(write: &mut fmt::Write) -> Formatter {
[INFO] [stderr]    |                            ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/formatter.rs:19:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     write: &'write mut fmt::Write,
[INFO] [stderr]    |                        ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Write`
[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/formatter.rs:30:28
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new(write: &mut fmt::Write) -> Formatter {
[INFO] [stderr]    |                            ^^^^^^^^^^ help: use `dyn`: `dyn fmt::Write`
[INFO] [stderr] 
[INFO] [stderr] warning[E0521]: borrowed data escapes outside of function
[INFO] [stderr]    --> src/js.rs:139:32
[INFO] [stderr]     |
[INFO] [stderr] 132 |         tokens: Tokens<'a, JavaScript<'a>>,
[INFO] [stderr]     |         ------ `tokens` is a reference that is only valid in the function body
[INFO] [stderr] 133 |         out: &mut Formatter,
[INFO] [stderr] 134 |         extra: &mut Self::Extra,
[INFO] [stderr]     |         ----- `extra` is declared here, outside of the function body
[INFO] [stderr] ...
[INFO] [stderr] 139 |         if let Some(imports) = Self::imports(&tokens) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^ `tokens` escapes the function body here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0597]: `tokens` does not live long enough
[INFO] [stderr]    --> src/js.rs:139:46
[INFO] [stderr]     |
[INFO] [stderr] 102 | impl<'el> Custom for JavaScript<'el> {
[INFO] [stderr]     |      --- lifetime `'el` defined here
[INFO] [stderr] ...
[INFO] [stderr] 139 |         if let Some(imports) = Self::imports(&tokens) {
[INFO] [stderr]     |                                --------------^^^^^^^-
[INFO] [stderr]     |                                |             |
[INFO] [stderr]     |                                |             borrowed value does not live long enough
[INFO] [stderr]     |                                argument requires that `tokens` is borrowed for `'el`
[INFO] [stderr] ...
[INFO] [stderr] 145 |     }
[INFO] [stderr]     |     - `tokens` dropped here while still borrowed
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0521]: borrowed data escapes outside of function
[INFO] [stderr]    --> src/js.rs:139:32
[INFO] [stderr]     |
[INFO] [stderr] 132 |         tokens: Tokens<'a, JavaScript<'a>>,
[INFO] [stderr]     |         ------ `tokens` is a reference that is only valid in the function body
[INFO] [stderr] 133 |         out: &mut Formatter,
[INFO] [stderr] 134 |         extra: &mut Self::Extra,
[INFO] [stderr]     |         ----- `extra` is declared here, outside of the function body
[INFO] [stderr] ...
[INFO] [stderr] 139 |         if let Some(imports) = Self::imports(&tokens) {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^^^^ `tokens` escapes the function body here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr] warning[E0597]: `tokens` does not live long enough
[INFO] [stderr]    --> src/js.rs:139:46
[INFO] [stderr]     |
[INFO] [stderr] 102 | impl<'el> Custom for JavaScript<'el> {
[INFO] [stderr]     |      --- lifetime `'el` defined here
[INFO] [stderr] ...
[INFO] [stderr] 139 |         if let Some(imports) = Self::imports(&tokens) {
[INFO] [stderr]     |                                --------------^^^^^^^-
[INFO] [stderr]     |                                |             |
[INFO] [stderr]     |                                |             borrowed value does not live long enough
[INFO] [stderr]     |                                argument requires that `tokens` is borrowed for `'el`
[INFO] [stderr] ...
[INFO] [stderr] 145 |     }
[INFO] [stderr]     |     - `tokens` dropped here while still borrowed
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.08s
[INFO] running `"docker" "inspect" "a3d4f1088cb85245e4db1bf5913195417486ffb399e4233f5d1a0f437fa854db"`
[INFO] running `"docker" "rm" "-f" "a3d4f1088cb85245e4db1bf5913195417486ffb399e4233f5d1a0f437fa854db"`
[INFO] [stdout] a3d4f1088cb85245e4db1bf5913195417486ffb399e4233f5d1a0f437fa854db