[INFO] cloning repository https://github.com/undo-lang/vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/undo-lang/vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundo-lang%2Fvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundo-lang%2Fvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d5dea92caafe86acd50ef8aedf59e4cc495fb56
[INFO] checking undo-lang/vm against master#da897dfb6daa268a965d2d73620316ba56020a19 for pr-76219
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fundo-lang%2Fvm" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/undo-lang/vm on toolchain da897dfb6daa268a965d2d73620316ba56020a19
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/undo-lang/vm
[INFO] finished tweaking git repo https://github.com/undo-lang/vm
[INFO] tweaked toml for git repo https://github.com/undo-lang/vm written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/undo-lang/vm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+da897dfb6daa268a965d2d73620316ba56020a19" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+da897dfb6daa268a965d2d73620316ba56020a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc5db4271625500fd5be2b6e99c682e0c6e17f4580ba5393371fdbb67c63b935
[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" "bc5db4271625500fd5be2b6e99c682e0c6e17f4580ba5393371fdbb67c63b935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc5db4271625500fd5be2b6e99c682e0c6e17f4580ba5393371fdbb67c63b935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc5db4271625500fd5be2b6e99c682e0c6e17f4580ba5393371fdbb67c63b935", kill_on_drop: false }`
[INFO] [stdout] bc5db4271625500fd5be2b6e99c682e0c6e17f4580ba5393371fdbb67c63b935
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+da897dfb6daa268a965d2d73620316ba56020a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03b349649f2d63cd7a57a8b3b913417f3b07bc477215b7f82ef28de3c9f267ee
[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" "03b349649f2d63cd7a57a8b3b913417f3b07bc477215b7f82ef28de3c9f267ee", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.100
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]     Checking serde_json v1.0.3
[INFO] [stderr]     Checking undo-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/vm.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let value = gc.at(ptr);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/vm.rs:166:34
[INFO] [stdout]     |
[INFO] [stdout] 166 |           Value::ModuleFnRef(ns, name) if ns[0] == "Prelude" => {
[INFO] [stdout]     |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ns`
[INFO] [stdout]    --> src/vm.rs:172:30
[INFO] [stdout]     |
[INFO] [stdout] 172 |           Value::ModuleFnRef(ns, name) => {
[INFO] [stdout]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_ns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/vm.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             for i in (1..=*argNum).rev() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/vm.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let value = gc.at(ptr);
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/vm.rs:166:34
[INFO] [stdout]     |
[INFO] [stdout] 166 |           Value::ModuleFnRef(ns, name) if ns[0] == "Prelude" => {
[INFO] [stdout]     |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ns`
[INFO] [stdout]    --> src/vm.rs:172:30
[INFO] [stdout]     |
[INFO] [stdout] 172 |           Value::ModuleFnRef(ns, name) => {
[INFO] [stdout]     |                              ^^ help: if this is intentional, prefix it with an underscore: `_ns`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/vm.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             for i in (1..=*argNum).rev() {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makeFrame` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn makeFrame(module: &Module, name: String) -> Frame {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case: `make_frame`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `curFn` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn curFn<'a>(module: &'a Module, fnName: String) -> &'a Vec<Instruction> {
[INFO] [stdout]    |    ^^^^^ help: convert the identifier to snake case: `cur_fn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fnName` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:46:34
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn curFn<'a>(module: &'a Module, fnName: String) -> &'a Vec<Instruction> {
[INFO] [stdout]    |                                  ^^^^^^ help: convert the identifier to snake case: `fn_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `goMain` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn goMain(module: Module) {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `go_main`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `curFrame` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut curFrame = frames.back_mut().unwrap();
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `cur_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `argNum` should have a snake case name
[INFO] [stdout]    --> src/vm.rs:158:30
[INFO] [stdout]     |
[INFO] [stdout] 158 |       Some(Instruction::Call(argNum)) => {
[INFO] [stdout]     |                              ^^^^^^ help: convert the identifier to snake case: `arg_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `newFrame` should have a snake case name
[INFO] [stdout]    --> src/vm.rs:177:21
[INFO] [stdout]     |
[INFO] [stdout] 177 |             let mut newFrame = makeFrame(&module, name.to_string());
[INFO] [stdout]     |                     ^^^^^^^^ help: convert the identifier to snake case: `new_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `makeFrame` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn makeFrame(module: &Module, name: String) -> Frame {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case: `make_frame`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `curFn` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn curFn<'a>(module: &'a Module, fnName: String) -> &'a Vec<Instruction> {
[INFO] [stdout]    |    ^^^^^ help: convert the identifier to snake case: `cur_fn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `fnName` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:46:34
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn curFn<'a>(module: &'a Module, fnName: String) -> &'a Vec<Instruction> {
[INFO] [stdout]    |                                  ^^^^^^ help: convert the identifier to snake case: `fn_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `goMain` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn goMain(module: Module) {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `go_main`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `curFrame` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut curFrame = frames.back_mut().unwrap();
[INFO] [stdout]    |             ^^^^^^^^ help: convert the identifier to snake case: `cur_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `argNum` should have a snake case name
[INFO] [stdout]    --> src/vm.rs:158:30
[INFO] [stdout]     |
[INFO] [stdout] 158 |       Some(Instruction::Call(argNum)) => {
[INFO] [stdout]     |                              ^^^^^^ help: convert the identifier to snake case: `arg_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `newFrame` should have a snake case name
[INFO] [stdout]    --> src/vm.rs:177:21
[INFO] [stdout]     |
[INFO] [stdout] 177 |             let mut newFrame = makeFrame(&module, name.to_string());
[INFO] [stdout]     |                     ^^^^^^^^ help: convert the identifier to snake case: `new_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.84s
[INFO] running `Command { std: "docker" "inspect" "03b349649f2d63cd7a57a8b3b913417f3b07bc477215b7f82ef28de3c9f267ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b349649f2d63cd7a57a8b3b913417f3b07bc477215b7f82ef28de3c9f267ee", kill_on_drop: false }`
[INFO] [stdout] 03b349649f2d63cd7a57a8b3b913417f3b07bc477215b7f82ef28de3c9f267ee