[INFO] updating cached repository https://github.com/piittis/rust-beginnings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3fc117cd12481c9a300d871695fde8b7f40a335
[INFO] checking piittis/rust-beginnings against master#e22b61bff0bdd08be7665607cb7be3748c8a35d2 for pr-74627
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpiittis%2Frust-beginnings" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/piittis/rust-beginnings on toolchain e22b61bff0bdd08be7665607cb7be3748c8a35d2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/piittis/rust-beginnings
[INFO] finished tweaking git repo https://github.com/piittis/rust-beginnings
[INFO] tweaked toml for git repo https://github.com/piittis/rust-beginnings written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/piittis/rust-beginnings already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ce63684fbcad903b2949585d2719526f55b4e13004430d5f894b3ecc3aee7e0
[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" "2ce63684fbcad903b2949585d2719526f55b4e13004430d5f894b3ecc3aee7e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ce63684fbcad903b2949585d2719526f55b4e13004430d5f894b3ecc3aee7e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ce63684fbcad903b2949585d2719526f55b4e13004430d5f894b3ecc3aee7e0", kill_on_drop: false }`
[INFO] [stdout] 2ce63684fbcad903b2949585d2719526f55b4e13004430d5f894b3ecc3aee7e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+e22b61bff0bdd08be7665607cb7be3748c8a35d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 206cd9fb29fb955103b2c75199e8d33849b9f79b25be79126e14d9fd4f2143b5
[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" "206cd9fb29fb955103b2c75199e8d33849b9f79b25be79126e14d9fd4f2143b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking start v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `disassemble_chunk`
[INFO] [stdout]  --> src/debug.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn disassemble_chunk(chunk: &Chunk, name: &str) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CompileError`
[INFO] [stdout]   --> src/vm.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     CompileError,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RuntimeError`
[INFO] [stdout]   --> src/vm.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     RuntimeError,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resetStack`
[INFO] [stdout]   --> src/vm.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn resetStack(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `resetStack` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn resetStack(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to snake case: `reset_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `disassemble_chunk`
[INFO] [stdout]  --> src/debug.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn disassemble_chunk(chunk: &Chunk, name: &str) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CompileError`
[INFO] [stdout]   --> src/vm.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     CompileError,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RuntimeError`
[INFO] [stdout]   --> src/vm.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     RuntimeError,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `resetStack`
[INFO] [stdout]   --> src/vm.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn resetStack(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `resetStack` should have a snake case name
[INFO] [stdout]   --> src/vm.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 82 |     fn resetStack(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^ help: convert the identifier to snake case: `reset_stack`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.66s
[INFO] running `Command { std: "docker" "inspect" "206cd9fb29fb955103b2c75199e8d33849b9f79b25be79126e14d9fd4f2143b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "206cd9fb29fb955103b2c75199e8d33849b9f79b25be79126e14d9fd4f2143b5", kill_on_drop: false }`
[INFO] [stdout] 206cd9fb29fb955103b2c75199e8d33849b9f79b25be79126e14d9fd4f2143b5