[INFO] cloning repository https://github.com/CyberCat3/CahnLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CyberCat3/CahnLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyberCat3%2FCahnLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyberCat3%2FCahnLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 233044660e3325a707d7c4e4e3214fc8e565711b
[INFO] checking CyberCat3/CahnLang against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCyberCat3%2FCahnLang" "/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/CyberCat3/CahnLang on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CyberCat3/CahnLang
[INFO] finished tweaking git repo https://github.com/CyberCat3/CahnLang
[INFO] tweaked toml for git repo https://github.com/CyberCat3/CahnLang written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/CyberCat3/CahnLang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2404fc9f9eb5d5f644a8a0b3b10e846a3e347c6bc8bd5ad557a3004251597f0
[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" "f2404fc9f9eb5d5f644a8a0b3b10e846a3e347c6bc8bd5ad557a3004251597f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2404fc9f9eb5d5f644a8a0b3b10e846a3e347c6bc8bd5ad557a3004251597f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2404fc9f9eb5d5f644a8a0b3b10e846a3e347c6bc8bd5ad557a3004251597f0", kill_on_drop: false }`
[INFO] [stdout] f2404fc9f9eb5d5f644a8a0b3b10e846a3e347c6bc8bd5ad557a3004251597f0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f7c67a4ce67e2e348b6243f9476d16dff169b1cdb5caa8187b7159bec87d07e
[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" "6f7c67a4ce67e2e348b6243f9476d16dff169b1cdb5caa8187b7159bec87d07e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking once_cell v1.7.0
[INFO] [stderr]     Checking bumpalo v3.6.1
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking cahn_lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/runtime/value.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{self, Write};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/runtime/value.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{self, Write};
[INFO] [stdout]   |                      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_local`
[INFO] [stdout]    --> src/compiler/codegen/codegenerator.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn get_local(&self, index: usize) -> Option<&Local> {
[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_u64`
[INFO] [stdout]    --> src/runtime/vm.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn read_u64(&mut self) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `assert_function`
[INFO] [stdout]    --> src/runtime/vm.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn assert_function<'b>(&'b self, val: Value) -> &'a CahnFunction {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `assert_return_address`
[INFO] [stdout]    --> src/runtime/vm.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn assert_return_address(&self, val: Value) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_local`
[INFO] [stdout]    --> src/compiler/codegen/codegenerator.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn get_local(&self, index: usize) -> Option<&Local> {
[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_u64`
[INFO] [stdout]    --> src/runtime/vm.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn read_u64(&mut self) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `assert_function`
[INFO] [stdout]    --> src/runtime/vm.rs:145:8
[INFO] [stdout]     |
[INFO] [stdout] 145 |     fn assert_function<'b>(&'b self, val: Value) -> &'a CahnFunction {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `assert_return_address`
[INFO] [stdout]    --> src/runtime/vm.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn assert_return_address(&self, val: Value) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.35s
[INFO] running `Command { std: "docker" "inspect" "6f7c67a4ce67e2e348b6243f9476d16dff169b1cdb5caa8187b7159bec87d07e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f7c67a4ce67e2e348b6243f9476d16dff169b1cdb5caa8187b7159bec87d07e", kill_on_drop: false }`
[INFO] [stdout] 6f7c67a4ce67e2e348b6243f9476d16dff169b1cdb5caa8187b7159bec87d07e