[INFO] cloning repository https://github.com/iasoon/het
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iasoon/het" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiasoon%2Fhet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiasoon%2Fhet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d2ff0ac751b08f089605216e26ba5acfac291ae
[INFO] checking iasoon/het against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiasoon%2Fhet" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iasoon/het 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/iasoon/het
[INFO] finished tweaking git repo https://github.com/iasoon/het
[INFO] tweaked toml for git repo https://github.com/iasoon/het written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/iasoon/het 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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee1b2a30cb741a59ff58036853a3e667ffafa5de925a1446605c1c5bb03e08cb
[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" "ee1b2a30cb741a59ff58036853a3e667ffafa5de925a1446605c1c5bb03e08cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee1b2a30cb741a59ff58036853a3e667ffafa5de925a1446605c1c5bb03e08cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee1b2a30cb741a59ff58036853a3e667ffafa5de925a1446605c1c5bb03e08cb", kill_on_drop: false }`
[INFO] [stdout] ee1b2a30cb741a59ff58036853a3e667ffafa5de925a1446605c1c5bb03e08cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] 1c977a6fc7a777ba6014a63817a1d952c94c9b31682fe2d65621ad75030a54bf
[INFO] running `Command { std: "docker" "start" "-a" "1c977a6fc7a777ba6014a63817a1d952c94c9b31682fe2d65621ad75030a54bf", kill_on_drop: false }`
[INFO] [stderr]     Checking de-het-taal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/types.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/types.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_type`
[INFO] [stdout]    --> src/types.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let arg_type = match &arg.type_name {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_type`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:72:33
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn read_while<P>(&mut self, mut pred: P) -> String
[INFO] [stdout]    |                                 ----^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg_type`
[INFO] [stdout]    --> src/types.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                 let arg_type = match &arg.type_name {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arg_type`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:72:33
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn read_while<P>(&mut self, mut pred: P) -> String
[INFO] [stdout]    |                                 ----^^^^
[INFO] [stdout]    |                                 |
[INFO] [stdout]    |                                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pos`
[INFO] [stdout]   --> src/lexer.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn pos(&self) -> Option<char> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_while`
[INFO] [stdout]   --> src/lexer.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn read_while<P>(&mut self, mut pred: P) -> String
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrimitiveFn`
[INFO] [stdout]  --> src/evaluator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     PrimitiveFn(&'static dyn Fn(&[Value]) -> Result<Value, String>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]  --> src/evaluator.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Number(f64),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lambda`
[INFO] [stdout]   --> src/evaluator.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Lambda { args: Vec<String>, body: Closure },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resolve`
[INFO] [stdout]   --> src/evaluator.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn resolve<'a>(&'a self, name: &str) -> Option<&'a Value> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `default`
[INFO] [stdout]   --> src/evaluator.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn default() -> Env {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval`
[INFO] [stdout]   --> src/evaluator.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn eval(expr: &Expr) -> Result<Value, String> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval_`
[INFO] [stdout]   --> src/evaluator.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn eval_(env: &Env, expr: &Expr) -> Result<Value, String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply`
[INFO] [stdout]   --> src/evaluator.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn apply(abs: &Value, args: &[Value]) -> Result<Value, String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fun_add`
[INFO] [stdout]   --> src/evaluator.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn fun_add(values: &[Value]) -> Result<Value, String> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eq`
[INFO] [stdout]   --> src/types.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Eq { t1: Type, t2: Type }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pos`
[INFO] [stdout]   --> src/lexer.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn pos(&self) -> Option<char> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_while`
[INFO] [stdout]   --> src/lexer.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn read_while<P>(&mut self, mut pred: P) -> String
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PrimitiveFn`
[INFO] [stdout]  --> src/evaluator.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     PrimitiveFn(&'static dyn Fn(&[Value]) -> Result<Value, String>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Number`
[INFO] [stdout]  --> src/evaluator.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Number(f64),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Lambda`
[INFO] [stdout]   --> src/evaluator.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Lambda { args: Vec<String>, body: Closure },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resolve`
[INFO] [stdout]   --> src/evaluator.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn resolve<'a>(&'a self, name: &str) -> Option<&'a Value> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `default`
[INFO] [stdout]   --> src/evaluator.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn default() -> Env {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval`
[INFO] [stdout]   --> src/evaluator.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn eval(expr: &Expr) -> Result<Value, String> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `eval_`
[INFO] [stdout]   --> src/evaluator.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn eval_(env: &Env, expr: &Expr) -> Result<Value, String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `apply`
[INFO] [stdout]   --> src/evaluator.rs:80:4
[INFO] [stdout]    |
[INFO] [stdout] 80 | fn apply(abs: &Value, args: &[Value]) -> Result<Value, String> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fun_add`
[INFO] [stdout]   --> src/evaluator.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn fun_add(values: &[Value]) -> Result<Value, String> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Eq`
[INFO] [stdout]   --> src/types.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     Eq { t1: Type, t2: Type }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "1c977a6fc7a777ba6014a63817a1d952c94c9b31682fe2d65621ad75030a54bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c977a6fc7a777ba6014a63817a1d952c94c9b31682fe2d65621ad75030a54bf", kill_on_drop: false }`
[INFO] [stdout] 1c977a6fc7a777ba6014a63817a1d952c94c9b31682fe2d65621ad75030a54bf