[INFO] cloning repository https://github.com/paavohuhtala/toylang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/paavohuhtala/toylang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaavohuhtala%2Ftoylang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaavohuhtala%2Ftoylang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3cef30c0fec1d034c80bec83264738666facf326
[INFO] checking paavohuhtala/toylang against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpaavohuhtala%2Ftoylang" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/paavohuhtala/toylang on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/paavohuhtala/toylang
[INFO] finished tweaking git repo https://github.com/paavohuhtala/toylang
[INFO] tweaked toml for git repo https://github.com/paavohuhtala/toylang written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/paavohuhtala/toylang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 58938257b866868324273b3e05a2f082827e7eb1dc6602f9cfc38951afe34a89
[INFO] running `Command { std: "docker" "start" "-a" "58938257b866868324273b3e05a2f082827e7eb1dc6602f9cfc38951afe34a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58938257b866868324273b3e05a2f082827e7eb1dc6602f9cfc38951afe34a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58938257b866868324273b3e05a2f082827e7eb1dc6602f9cfc38951afe34a89", kill_on_drop: false }`
[INFO] [stdout] 58938257b866868324273b3e05a2f082827e7eb1dc6602f9cfc38951afe34a89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 90d0c099b30ddab2bdc16add663f8b26a4320dcf84658d0ea28d461e8fc5748d
[INFO] running `Command { std: "docker" "start" "-a" "90d0c099b30ddab2bdc16add663f8b26a4320dcf84658d0ea28d461e8fc5748d", kill_on_drop: false }`
[INFO] [stderr]     Checking toylanguage v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 |       _ => unreachable!(),
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     _ => unimplemented!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     _ => panic!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn are_equal(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:43:22
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn is_assignable(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 |       _ => unreachable!(),
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     _ => unimplemented!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     _ => panic!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn are_equal(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:43:22
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn is_assignable(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `semantic_ctx`
[INFO] [stdout]   --> src/interpreter.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   semantic_ctx: SemanticContext,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `semantic_ctx`
[INFO] [stdout]   --> src/interpreter.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   semantic_ctx: SemanticContext,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 |       _ => unreachable!(),
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     _ => unimplemented!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     _ => panic!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn are_equal(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:43:22
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn is_assignable(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/interpreter.rs:53:7
[INFO] [stdout]    |
[INFO] [stdout] 53 |       _ => unreachable!(),
[INFO] [stdout]    |       ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:100:5
[INFO] [stdout]     |
[INFO] [stdout] 100 |     _ => unimplemented!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/type_checker.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     _ => panic!(),
[INFO] [stdout]     |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn are_equal(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]   --> src/type_checker.rs:43:22
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn is_assignable(ctx: &mut SemanticContext, a: TypeRef, b: TypeRef) -> bool {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Equals`
[INFO] [stdout]  --> src/ast_common.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   Equals,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unary`
[INFO] [stdout]   --> src/ast_common.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 27 |   Unary(UnaryOperator),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take`
[INFO] [stdout]   --> src/char_stream.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn take(&mut self) -> Option<char> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_until`
[INFO] [stdout]   --> src/char_stream.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 |   pub fn skip_until(&mut self, predicate: impl Fn(char) -> bool) {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/interpreter.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Bool(bool),
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `semantic_ctx`
[INFO] [stdout]   --> src/interpreter.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   semantic_ctx: SemanticContext,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take_integer`
[INFO] [stdout]   --> src/parser.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |   pub fn take_integer(&mut self) -> ParseResult<(usize, i128)> {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `declare_type`
[INFO] [stdout]   --> src/semantic.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |   pub fn declare_type(&mut self, type_: UserType) -> TypeRef {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resolve_scope_mut`
[INFO] [stdout]   --> src/semantic.rs:95:10
[INFO] [stdout]    |
[INFO] [stdout] 95 |   pub fn resolve_scope_mut(&mut self, scope_id: ScopeId) -> &mut Scope {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnterminatedString`
[INFO] [stdout]  --> src/token_stream.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   UnterminatedString,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Equals`
[INFO] [stdout]  --> src/ast_common.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   Equals,
[INFO] [stdout]   |   ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unary`
[INFO] [stdout]   --> src/ast_common.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 27 |   Unary(UnaryOperator),
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bool`
[INFO] [stdout]   --> src/interpreter.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   Bool(bool),
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `semantic_ctx`
[INFO] [stdout]   --> src/interpreter.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   semantic_ctx: SemanticContext,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take_integer`
[INFO] [stdout]   --> src/parser.rs:58:10
[INFO] [stdout]    |
[INFO] [stdout] 58 |   pub fn take_integer(&mut self) -> ParseResult<(usize, i128)> {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `declare_type`
[INFO] [stdout]   --> src/semantic.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |   pub fn declare_type(&mut self, type_: UserType) -> TypeRef {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resolve_scope_mut`
[INFO] [stdout]   --> src/semantic.rs:95:10
[INFO] [stdout]    |
[INFO] [stdout] 95 |   pub fn resolve_scope_mut(&mut self, scope_id: ScopeId) -> &mut Scope {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnterminatedString`
[INFO] [stdout]  --> src/token_stream.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   UnterminatedString,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.16s
[INFO] running `Command { std: "docker" "inspect" "90d0c099b30ddab2bdc16add663f8b26a4320dcf84658d0ea28d461e8fc5748d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d0c099b30ddab2bdc16add663f8b26a4320dcf84658d0ea28d461e8fc5748d", kill_on_drop: false }`
[INFO] [stdout] 90d0c099b30ddab2bdc16add663f8b26a4320dcf84658d0ea28d461e8fc5748d