[INFO] cloning repository https://github.com/akky2501/Ruml
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akky2501/Ruml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2FRuml"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2FRuml'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb84680a5dec0dde3d2fb0718267528f27fd9931
[INFO] checking akky2501/Ruml against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakky2501%2FRuml" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akky2501/Ruml on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/akky2501/Ruml
[INFO] finished tweaking git repo https://github.com/akky2501/Ruml
[INFO] tweaked toml for git repo https://github.com/akky2501/Ruml written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/akky2501/Ruml already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8239b05ef9db6cf9f763f726528d2a5b4da07eac14f1f3cb47d04421d5e53d30
[INFO] running `"docker" "start" "-a" "8239b05ef9db6cf9f763f726528d2a5b4da07eac14f1f3cb47d04421d5e53d30"`
[INFO] [stderr]     Checking pom v1.0.1
[INFO] [stderr]     Checking Ruml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/id.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | / lazy_static! {
[INFO] [stderr] 7 | |     static ref NEXT_COUNT: Mutex<usize> = Mutex::new(0);
[INFO] [stderr] 8 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/id.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | / lazy_static! {
[INFO] [stderr] 7 | |     static ref NEXT_COUNT: Mutex<usize> = Mutex::new(0);
[INFO] [stderr] 8 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/parse.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / lazy_static! {
[INFO] [stderr] 24 | |     static ref RESERVED: HashSet<Id> = {
[INFO] [stderr] 25 | |         let mut s = HashSet::new();
[INFO] [stderr] 26 | |         s.insert(Id::new("let".to_string()));
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     };
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/parse.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / lazy_static! {
[INFO] [stderr] 24 | |     static ref RESERVED: HashSet<Id> = {
[INFO] [stderr] 25 | |         let mut s = HashSet::new();
[INFO] [stderr] 26 | |         s.insert(Id::new("let".to_string()));
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     };
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/typing.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / lazy_static! {
[INFO] [stderr] 12 | |     static ref TYPE_VAR_NEXT_COUNT: Mutex<TypeId> = Mutex::new(0);
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/typing.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / lazy_static! {
[INFO] [stderr] 12 | |     static ref TYPE_VAR_NEXT_COUNT: Mutex<TypeId> = Mutex::new(0);
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/id.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | / lazy_static! {
[INFO] [stderr] 7 | |     static ref NEXT_COUNT: Mutex<usize> = Mutex::new(0);
[INFO] [stderr] 8 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/id.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | / lazy_static! {
[INFO] [stderr] 7 | |     static ref NEXT_COUNT: Mutex<usize> = Mutex::new(0);
[INFO] [stderr] 8 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/parse.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / lazy_static! {
[INFO] [stderr] 24 | |     static ref RESERVED: HashSet<Id> = {
[INFO] [stderr] 25 | |         let mut s = HashSet::new();
[INFO] [stderr] 26 | |         s.insert(Id::new("let".to_string()));
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     };
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/parse.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / lazy_static! {
[INFO] [stderr] 24 | |     static ref RESERVED: HashSet<Id> = {
[INFO] [stderr] 25 | |         let mut s = HashSet::new();
[INFO] [stderr] 26 | |         s.insert(Id::new("let".to_string()));
[INFO] [stderr] ...  |
[INFO] [stderr] 42 | |     };
[INFO] [stderr] 43 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/typing.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / lazy_static! {
[INFO] [stderr] 12 | |     static ref TYPE_VAR_NEXT_COUNT: Mutex<TypeId> = Mutex::new(0);
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/typing.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | / lazy_static! {
[INFO] [stderr] 12 | |     static ref TYPE_VAR_NEXT_COUNT: Mutex<TypeId> = Mutex::new(0);
[INFO] [stderr] 13 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/typing.rs:667:9
[INFO] [stderr]     |
[INFO] [stderr] 667 |         _ => unimplemented!(),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctor`
[INFO] [stderr]    --> src/mangling.rs:106:29
[INFO] [stderr]     |
[INFO] [stderr] 106 |         &mut Ctor { ref mut ctor, ref mut args , type_: _} => {
[INFO] [stderr]     |                     --------^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: try ignoring the field: `ctor: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/mangling.rs:211:36
[INFO] [stderr]     |
[INFO] [stderr] 211 |         &mut DataDestruct{ ref mut data, ref mut args } => {
[INFO] [stderr]     |                            --------^^^^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: try ignoring the field: `data: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctor`
[INFO] [stderr]    --> src/typing.rs:692:29
[INFO] [stderr]     |
[INFO] [stderr] 692 |         &mut Ctor { ref mut ctor, ref mut args , ref mut type_} => {
[INFO] [stderr]     |                     --------^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: try ignoring the field: `ctor: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `type_`
[INFO] [stderr]    --> src/typing.rs:737:76
[INFO] [stderr]     |
[INFO] [stderr] 737 |         &mut LetTuple { ref mut names, ref mut expr, ref mut cont, ref mut type_} =>  {
[INFO] [stderr]     |                                                                    --------^^^^^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: try ignoring the field: `type_: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/eval.rs:246:22
[INFO] [stderr]     |
[INFO] [stderr] 246 |         &Match { ref expr, ref arms , type_: _} => unimplemented!(),
[INFO] [stderr]     |                  ----^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: try ignoring the field: `expr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arms`
[INFO] [stderr]    --> src/eval.rs:246:32
[INFO] [stderr]     |
[INFO] [stderr] 246 |         &Match { ref expr, ref arms , type_: _} => unimplemented!(),
[INFO] [stderr]     |                            ----^^^^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: try ignoring the field: `arms: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/eval.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn remove(&self, key: &K) -> Option<V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Ruml` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `ruml`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/typing.rs:667:9
[INFO] [stderr]     |
[INFO] [stderr] 667 |         _ => unimplemented!(),
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctor`
[INFO] [stderr]    --> src/mangling.rs:106:29
[INFO] [stderr]     |
[INFO] [stderr] 106 |         &mut Ctor { ref mut ctor, ref mut args , type_: _} => {
[INFO] [stderr]     |                     --------^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: try ignoring the field: `ctor: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]    --> src/mangling.rs:211:36
[INFO] [stderr]     |
[INFO] [stderr] 211 |         &mut DataDestruct{ ref mut data, ref mut args } => {
[INFO] [stderr]     |                            --------^^^^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: try ignoring the field: `data: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctor`
[INFO] [stderr]    --> src/typing.rs:692:29
[INFO] [stderr]     |
[INFO] [stderr] 692 |         &mut Ctor { ref mut ctor, ref mut args , ref mut type_} => {
[INFO] [stderr]     |                     --------^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: try ignoring the field: `ctor: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `type_`
[INFO] [stderr]    --> src/typing.rs:737:76
[INFO] [stderr]     |
[INFO] [stderr] 737 |         &mut LetTuple { ref mut names, ref mut expr, ref mut cont, ref mut type_} =>  {
[INFO] [stderr]     |                                                                    --------^^^^^
[INFO] [stderr]     |                                                                    |
[INFO] [stderr]     |                                                                    help: try ignoring the field: `type_: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/eval.rs:246:22
[INFO] [stderr]     |
[INFO] [stderr] 246 |         &Match { ref expr, ref arms , type_: _} => unimplemented!(),
[INFO] [stderr]     |                  ----^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: try ignoring the field: `expr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arms`
[INFO] [stderr]    --> src/eval.rs:246:32
[INFO] [stderr]     |
[INFO] [stderr] 246 |         &Match { ref expr, ref arms , type_: _} => unimplemented!(),
[INFO] [stderr]     |                            ----^^^^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            help: try ignoring the field: `arms: _`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `remove`
[INFO] [stderr]   --> src/eval.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn remove(&self, key: &K) -> Option<V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Ruml` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `ruml`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `"docker" "inspect" "8239b05ef9db6cf9f763f726528d2a5b4da07eac14f1f3cb47d04421d5e53d30"`
[INFO] running `"docker" "rm" "-f" "8239b05ef9db6cf9f763f726528d2a5b4da07eac14f1f3cb47d04421d5e53d30"`
[INFO] [stdout] 8239b05ef9db6cf9f763f726528d2a5b4da07eac14f1f3cb47d04421d5e53d30