[INFO] fetching crate monster 0.1.28...
[INFO] extracting crate monster 0.1.28 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/monster/0.1.28
[INFO] extracting crate monster 0.1.28 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/monster/0.1.28
[INFO] validating manifest of monster-0.1.28 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of monster-0.1.28 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing monster-0.1.28
[INFO] finished frobbing monster-0.1.28
[INFO] frobbed toml for monster-0.1.28 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/monster/0.1.28/Cargo.toml
[INFO] started frobbing monster-0.1.28
[INFO] finished frobbing monster-0.1.28
[INFO] frobbed toml for monster-0.1.28 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/monster/0.1.28/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking monster-0.1.28 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/monster/0.1.28:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f21f1b7bfa1a3df6137114505f08e2d0e38cb98b159fd60a12aa0c6855ae4ee5
[INFO] running `"docker" "start" "-a" "f21f1b7bfa1a3df6137114505f08e2d0e38cb98b159fd60a12aa0c6855ae4ee5"`
[INFO] [stderr]     Checking monster v0.1.28 (/opt/crater/workdir)
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ($($field:ident : $typ:ty = $value:expr),+) => ({
[INFO] [stderr]    |                                              - expected repetition
[INFO] [stderr] 20 |         anon!(Anon {
[INFO] [stderr] 21 |             $( $field: $typ = $value ),*
[INFO] [stderr]    |                ^^^^^^                  - conflicting repetition
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:21:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ($($field:ident : $typ:ty = $value:expr),+) => ({
[INFO] [stderr]    |                                              - expected repetition
[INFO] [stderr] 20 |         anon!(Anon {
[INFO] [stderr] 21 |             $( $field: $typ = $value ),*
[INFO] [stderr]    |                        ^^^^            - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:21:31
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ($($field:ident : $typ:ty = $value:expr),+) => ({
[INFO] [stderr]    |                                              - expected repetition
[INFO] [stderr] 20 |         anon!(Anon {
[INFO] [stderr] 21 |             $( $field: $typ = $value ),*
[INFO] [stderr]    |                               ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:27:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 27 |             $( $field: $typ ),*
[INFO] [stderr]    |                ^^^^^^         - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:27:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 27 |             $( $field: $typ ),*
[INFO] [stderr]    |                        ^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 31 |             $( $field: $value ),*
[INFO] [stderr]    |                ^^^^^^           - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 31 |             $( $field: $value ),*
[INFO] [stderr]    |                        ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:30:35
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn format(fmt: &str, args: &[&Display]) -> Result<String> {
[INFO] [stderr]    |                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:39:67
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn write_format<W: Write>(buffer: &mut W, fmt: &str, args: &[&Display]) -> Result<()> {
[INFO] [stderr]    |                                                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:21:16
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ($($field:ident : $typ:ty = $value:expr),+) => ({
[INFO] [stderr]    |                                              - expected repetition
[INFO] [stderr] 20 |         anon!(Anon {
[INFO] [stderr] 21 |             $( $field: $typ = $value ),*
[INFO] [stderr]    |                ^^^^^^                  - conflicting repetition
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:21:24
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ($($field:ident : $typ:ty = $value:expr),+) => ({
[INFO] [stderr]    |                                              - expected repetition
[INFO] [stderr] 20 |         anon!(Anon {
[INFO] [stderr] 21 |             $( $field: $typ = $value ),*
[INFO] [stderr]    |                        ^^^^            - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:21:31
[INFO] [stderr]    |
[INFO] [stderr] 19 |     ($($field:ident : $typ:ty = $value:expr),+) => ({
[INFO] [stderr]    |                                              - expected repetition
[INFO] [stderr] 20 |         anon!(Anon {
[INFO] [stderr] 21 |             $( $field: $typ = $value ),*
[INFO] [stderr]    |                               ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:27:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 27 |             $( $field: $typ ),*
[INFO] [stderr]    |                ^^^^^^         - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:27:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 27 |             $( $field: $typ ),*
[INFO] [stderr]    |                        ^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:31:16
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 31 |             $( $field: $value ),*
[INFO] [stderr]    |                ^^^^^^           - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]   --> src/incubation/anon.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 24 |     ($struct_name:ident { $($field:ident : $typ:ty = $value:expr),+ }) => ({
[INFO] [stderr]    |                                                                   - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 31 |             $( $field: $value ),*
[INFO] [stderr]    |                        ^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:30:35
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn format(fmt: &str, args: &[&Display]) -> Result<String> {
[INFO] [stderr]    |                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[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/incubation/fmt/mod.rs:39:67
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn write_format<W: Write>(buffer: &mut W, fmt: &str, args: &[&Display]) -> Result<()> {
[INFO] [stderr]    |                                                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `monster`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `monster`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f21f1b7bfa1a3df6137114505f08e2d0e38cb98b159fd60a12aa0c6855ae4ee5"`
[INFO] running `"docker" "rm" "-f" "f21f1b7bfa1a3df6137114505f08e2d0e38cb98b159fd60a12aa0c6855ae4ee5"`
[INFO] [stdout] f21f1b7bfa1a3df6137114505f08e2d0e38cb98b159fd60a12aa0c6855ae4ee5