[INFO] updating cached repository flavius/playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/flavius/playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/flavius/playground" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/flavius/playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/flavius/playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/flavius/playground" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/flavius/playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/flavius/playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b05c504c9696591db10de3235818bd6bda6d13b2
[INFO] sha for GitHub repo flavius/playground: b05c504c9696591db10de3235818bd6bda6d13b2
[INFO] validating manifest of flavius/playground on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of flavius/playground on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing flavius/playground
[INFO] finished frobbing flavius/playground
[INFO] frobbed toml for flavius/playground written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/flavius/playground/Cargo.toml
[INFO] started frobbing flavius/playground
[INFO] finished frobbing flavius/playground
[INFO] frobbed toml for flavius/playground written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/flavius/playground/Cargo.toml
[INFO] crate flavius/playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking flavius/playground against try#18481b65f318e0b4b20c0fc61340054701719d6c for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-1/try#18481b65f318e0b4b20c0fc61340054701719d6c:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/flavius/playground:/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" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4a6e3a146a8f97079d6b199916989d3bd68110b50f472bcb14d4837e7b92c44e
[INFO] running `"docker" "start" "-a" "4a6e3a146a8f97079d6b199916989d3bd68110b50f472bcb14d4837e7b92c44e"`
[INFO] [stderr]     Checking rust-ddd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[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:55:66
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:222:21
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let deps : Vec<&PluginSpecification> = vec![
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_specs`
[INFO] [stderr]    --> src/main.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |     let sorted_specs = sort_specifications(deps);
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_sorted_specs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:155:12
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:190:12
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut sorted = vec![];
[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: method `addDependency` should have a snake case name
[INFO] [stderr]   --> src/main.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn addDependency(&mut self, what: usize, dependency: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `add_dependency`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[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:55:66
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:222:21
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let deps : Vec<&PluginSpecification> = vec![
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_specs`
[INFO] [stderr]    --> src/main.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |     let sorted_specs = sort_specifications(deps);
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_sorted_specs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:155:12
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:190:12
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: consider prefixing with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut sorted = vec![];
[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: method `addDependency` should have a snake case name
[INFO] [stderr]   --> src/main.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn addDependency(&mut self, what: usize, dependency: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `add_dependency`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "4a6e3a146a8f97079d6b199916989d3bd68110b50f472bcb14d4837e7b92c44e"`
[INFO] running `"docker" "rm" "-f" "4a6e3a146a8f97079d6b199916989d3bd68110b50f472bcb14d4837e7b92c44e"`
[INFO] [stdout] 4a6e3a146a8f97079d6b199916989d3bd68110b50f472bcb14d4837e7b92c44e