[INFO] fetching crate eko-gc 0.0.2... [INFO] testing eko-gc-0.0.2 against 1.49.0 for beta-1.50-1 [INFO] extracting crate eko-gc 0.0.2 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate eko-gc 0.0.2 on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate eko-gc 0.0.2 [INFO] finished tweaking crates.io crate eko-gc 0.0.2 [INFO] tweaked toml for crates.io crate eko-gc 0.0.2 written to /workspace/builds/worker-9/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6e5212a5faaefacc5f386ad798b53a2aaa3afa39a40d434a0f116aad0973cb6a [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" "6e5212a5faaefacc5f386ad798b53a2aaa3afa39a40d434a0f116aad0973cb6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6e5212a5faaefacc5f386ad798b53a2aaa3afa39a40d434a0f116aad0973cb6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e5212a5faaefacc5f386ad798b53a2aaa3afa39a40d434a0f116aad0973cb6a", kill_on_drop: false }` [INFO] [stdout] 6e5212a5faaefacc5f386ad798b53a2aaa3afa39a40d434a0f116aad0973cb6a [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=warn" "-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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 54a40cf407595fdd9ce3a375322bc82fffdae9753975d70c7ae111f0a5aaebc8 [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" "54a40cf407595fdd9ce3a375322bc82fffdae9753975d70c7ae111f0a5aaebc8", kill_on_drop: false }` [INFO] [stderr] Compiling eko-gc v0.0.2 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(dropck_eyepatch)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/gc_arena.rs:42:47 [INFO] [stdout] | [INFO] [stdout] 42 | pub(crate) boxes: Option>>, [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Trace` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/gc_arena.rs:74:28 [INFO] [stdout] | [INFO] [stdout] 74 | let gc_box: &GcBox = unsafe { gc_box_ptr.as_ref() }; [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Trace` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/gc_arena.rs:82:38 [INFO] [stdout] | [INFO] [stdout] 82 | let mut unmarked: Vec<*mut GcBox> = Vec::new(); [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Trace` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/gc_box.rs:22:46 [INFO] [stdout] | [INFO] [stdout] 22 | pub(crate) next: Option>>, [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Trace` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `eko-gc` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "54a40cf407595fdd9ce3a375322bc82fffdae9753975d70c7ae111f0a5aaebc8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54a40cf407595fdd9ce3a375322bc82fffdae9753975d70c7ae111f0a5aaebc8", kill_on_drop: false }` [INFO] [stdout] 54a40cf407595fdd9ce3a375322bc82fffdae9753975d70c7ae111f0a5aaebc8