[INFO] cloning repository https://github.com/OlivierLemoine/Lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OlivierLemoine/Lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOlivierLemoine%2FLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOlivierLemoine%2FLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 984da1aacf3cc302438c01550d24d5373f8e7686
[INFO] checking OlivierLemoine/Lang against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOlivierLemoine%2FLang" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OlivierLemoine/Lang on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OlivierLemoine/Lang
[INFO] finished tweaking git repo https://github.com/OlivierLemoine/Lang
[INFO] tweaked toml for git repo https://github.com/OlivierLemoine/Lang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/OlivierLemoine/Lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 276895afdd0078d8c65bbc652c3a83f6042dbc14580d762c8dd57ca6160a7d6f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "276895afdd0078d8c65bbc652c3a83f6042dbc14580d762c8dd57ca6160a7d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "276895afdd0078d8c65bbc652c3a83f6042dbc14580d762c8dd57ca6160a7d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "276895afdd0078d8c65bbc652c3a83f6042dbc14580d762c8dd57ca6160a7d6f", kill_on_drop: false }`
[INFO] [stdout] 276895afdd0078d8c65bbc652c3a83f6042dbc14580d762c8dd57ca6160a7d6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] d0057a9c5caa92adc5eca985a4ea859a34756f1ec59d93f607873f0839c1f290
[INFO] running `Command { std: "docker" "start" "-a" "d0057a9c5caa92adc5eca985a4ea859a34756f1ec59d93f607873f0839c1f290", kill_on_drop: false }`
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/parser.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / macro_rules! print_it {
[INFO] [stdout] 25 | |     ($it:ident, $nb:expr) => {
[INFO] [stdout] 26 | |         println!("===");
[INFO] [stdout] 27 | |         let mut it_cp = $it.clone();
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     };
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/verifier.rs:2:49
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{hash_map::DefaultHasher, HashMap};
[INFO] [stdout]   |                                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/parser.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | / macro_rules! print_it {
[INFO] [stdout] 25 | |     ($it:ident, $nb:expr) => {
[INFO] [stdout] 26 | |         println!("===");
[INFO] [stdout] 27 | |         let mut it_cp = $it.clone();
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |     };
[INFO] [stdout] 33 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> src/verifier.rs:2:49
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::{hash_map::DefaultHasher, HashMap};
[INFO] [stdout]   |                                                 ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/c_transformer.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             args,
[INFO] [stdout]    |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `returns`
[INFO] [stdout]   --> src/c_transformer.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             returns,
[INFO] [stdout]    |             ^^^^^^^ help: try ignoring the field: `returns: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/c_transformer.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 args,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/c_transformer.rs:29:40
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Node::FunctionCall { name, args } => format!("{}();\n", name),
[INFO] [stdout]    |                                        ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]   --> src/verifier.rs:67:28
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let CompleteType { ty, generics } = x;
[INFO] [stdout]    |                            ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generics`
[INFO] [stdout]   --> src/verifier.rs:67:32
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let CompleteType { ty, generics } = x;
[INFO] [stdout]    |                                ^^^^^^^^ help: try ignoring the field: `generics: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:175:28
[INFO] [stdout]     |
[INFO] [stdout] 175 |         let Struct { name, attr, decl } = self;
[INFO] [stdout]     |                            ^^^^ help: try ignoring the field: `attr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:217:21
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let Field { attr, name, ty } = self;
[INFO] [stdout]     |                     ^^^^ help: try ignoring the field: `attr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_ctx`
[INFO] [stdout]    --> src/verifier.rs:215:21
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn verify(self, parent_ctx: Rc<Context>) -> Result<Context, VerificationError> {
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:235:21
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     attr,
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/verifier.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     args,
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:268:28
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let FunctionCall { attr, name, args } = self;
[INFO] [stdout]     |                            ^^^^ help: try ignoring the field: `attr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/verifier.rs:268:40
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let FunctionCall { attr, name, args } = self;
[INFO] [stdout]     |                                        ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/c_transformer.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             args,
[INFO] [stdout]    |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `returns`
[INFO] [stdout]   --> src/c_transformer.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             returns,
[INFO] [stdout]    |             ^^^^^^^ help: try ignoring the field: `returns: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/c_transformer.rs:20:17
[INFO] [stdout]    |
[INFO] [stdout] 20 |                 args,
[INFO] [stdout]    |                 ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/c_transformer.rs:29:40
[INFO] [stdout]    |
[INFO] [stdout] 29 |             Node::FunctionCall { name, args } => format!("{}();\n", name),
[INFO] [stdout]    |                                        ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]   --> src/verifier.rs:67:28
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let CompleteType { ty, generics } = x;
[INFO] [stdout]    |                            ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generics`
[INFO] [stdout]   --> src/verifier.rs:67:32
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let CompleteType { ty, generics } = x;
[INFO] [stdout]    |                                ^^^^^^^^ help: try ignoring the field: `generics: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:175:28
[INFO] [stdout]     |
[INFO] [stdout] 175 |         let Struct { name, attr, decl } = self;
[INFO] [stdout]     |                            ^^^^ help: try ignoring the field: `attr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:217:21
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let Field { attr, name, ty } = self;
[INFO] [stdout]     |                     ^^^^ help: try ignoring the field: `attr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_ctx`
[INFO] [stdout]    --> src/verifier.rs:215:21
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn verify(self, parent_ctx: Rc<Context>) -> Result<Context, VerificationError> {
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_ctx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:235:21
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     attr,
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_attr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/verifier.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     args,
[INFO] [stdout]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `attr`
[INFO] [stdout]    --> src/verifier.rs:268:28
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let FunctionCall { attr, name, args } = self;
[INFO] [stdout]     |                            ^^^^ help: try ignoring the field: `attr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/verifier.rs:268:40
[INFO] [stdout]     |
[INFO] [stdout] 268 |         let FunctionCall { attr, name, args } = self;
[INFO] [stdout]     |                                        ^^^^ help: try ignoring the field: `args: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I32`
[INFO] [stdout]   --> src/verifier.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     I32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TBD`
[INFO] [stdout]   --> src/verifier.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     TBD,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AlreadyDeclared`
[INFO] [stdout]    --> src/verifier.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     AlreadyDeclared(String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotFound`
[INFO] [stdout]    --> src/verifier.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     NotFound(String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLUSSRC`
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / const PLUSSRC: &'static str = "
[INFO] [stdout] 17 | | interface Add.U.V {
[INFO] [stdout] 18 | |     #infix
[INFO] [stdout] 19 | |     func + Self U returns V
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |
[INFO] [stdout] 56 | | ";
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `I32`
[INFO] [stdout]   --> src/verifier.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     I32,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TBD`
[INFO] [stdout]   --> src/verifier.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     TBD,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AlreadyDeclared`
[INFO] [stdout]    --> src/verifier.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |     AlreadyDeclared(String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NotFound`
[INFO] [stdout]    --> src/verifier.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 |     NotFound(String),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLUSSRC`
[INFO] [stdout]   --> src/main.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | / const PLUSSRC: &'static str = "
[INFO] [stdout] 17 | | interface Add.U.V {
[INFO] [stdout] 18 | |     #infix
[INFO] [stdout] 19 | |     func + Self U returns V
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |
[INFO] [stdout] 56 | | ";
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `Command { std: "docker" "inspect" "d0057a9c5caa92adc5eca985a4ea859a34756f1ec59d93f607873f0839c1f290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0057a9c5caa92adc5eca985a4ea859a34756f1ec59d93f607873f0839c1f290", kill_on_drop: false }`
[INFO] [stdout] d0057a9c5caa92adc5eca985a4ea859a34756f1ec59d93f607873f0839c1f290