[INFO] fetching crate gc-lite 0.3.0...
[INFO] checking gc-lite-0.3.0 against master#035b01b794602d5861daa43ac792f372f8981ed7 for 152214-denied-retry-0
[INFO] extracting crate gc-lite 0.3.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate gc-lite 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate gc-lite 0.3.0
[INFO] tweaked toml for crates.io crate gc-lite 0.3.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate gc-lite 0.3.0 on toolchain 035b01b794602d5861daa43ac792f372f8981ed7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate gc-lite 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 789b4c0e07d130560db88e22f7f18fbbb540e424afc3772a4c557832ce98afcb
[INFO] running `Command { std: "docker" "start" "-a" "789b4c0e07d130560db88e22f7f18fbbb540e424afc3772a4c557832ce98afcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "789b4c0e07d130560db88e22f7f18fbbb540e424afc3772a4c557832ce98afcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "789b4c0e07d130560db88e22f7f18fbbb540e424afc3772a4c557832ce98afcb", kill_on_drop: false }`
[INFO] [stdout] 789b4c0e07d130560db88e22f7f18fbbb540e424afc3772a4c557832ce98afcb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+035b01b794602d5861daa43ac792f372f8981ed7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cde1554fa82573868edb99a42816d80885eb6ad0a3bf1eaacfeb0204bb0464f8
[INFO] running `Command { std: "docker" "start" "-a" "cde1554fa82573868edb99a42816d80885eb6ad0a3bf1eaacfeb0204bb0464f8", kill_on_drop: false }`
[INFO] [stderr]     Checking gc-lite v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]    --> src/node.rs:235:60
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     && trace as usize == expected_trace_fn as usize
[INFO] [stdout]     |                                                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     && trace as usize == expected_trace_fn as *const () as usize
[INFO] [stdout]     |                                                            ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]    --> src/node.rs:235:60
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     && trace as usize == expected_trace_fn as usize
[INFO] [stdout]     |                                                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]     |
[INFO] [stdout] 235 |                     && trace as usize == expected_trace_fn as *const () as usize
[INFO] [stdout]     |                                                            ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> examples/performance_benchmark.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |         for i in 0..size {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> examples/performance_benchmark.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |     for i in 0..small_objects_count {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> examples/performance_benchmark.rs:265:5
[INFO] [stdout]     |
[INFO] [stdout] 264 | struct SimpleNode {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 265 |     data: Vec<u8>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SimpleNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `demonstrate_reference_detection_errors` is never used
[INFO] [stdout]    --> examples/error_handling.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn demonstrate_reference_detection_errors() -> GcResult<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]    --> examples/error_handling.rs:303:5
[INFO] [stdout]     |
[INFO] [stdout] 302 | struct LargeData {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 303 |     data: [u8; 1024], // 1KB data
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LargeData` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]    --> examples/error_handling.rs:327:8
[INFO] [stdout]     |
[INFO] [stdout] 327 | struct Node {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "cde1554fa82573868edb99a42816d80885eb6ad0a3bf1eaacfeb0204bb0464f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cde1554fa82573868edb99a42816d80885eb6ad0a3bf1eaacfeb0204bb0464f8", kill_on_drop: false }`
[INFO] [stdout] cde1554fa82573868edb99a42816d80885eb6ad0a3bf1eaacfeb0204bb0464f8