[INFO] fetching crate dockerfile-rs 0.3.0...
[INFO] checking dockerfile-rs-0.3.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate dockerfile-rs 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate dockerfile-rs 0.3.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dockerfile-rs 0.3.0
[INFO] finished tweaking crates.io crate dockerfile-rs 0.3.0
[INFO] tweaked toml for crates.io crate dockerfile-rs 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db94e319089065a586b79b1231ff2ef6792f8bf450c8ec20f909ec4cef8f39cb
[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" "db94e319089065a586b79b1231ff2ef6792f8bf450c8ec20f909ec4cef8f39cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db94e319089065a586b79b1231ff2ef6792f8bf450c8ec20f909ec4cef8f39cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db94e319089065a586b79b1231ff2ef6792f8bf450c8ec20f909ec4cef8f39cb", kill_on_drop: false }`
[INFO] [stdout] db94e319089065a586b79b1231ff2ef6792f8bf450c8ec20f909ec4cef8f39cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cbe3d9072cfb1bb3f276ff09cb4bf3acdd68056eef9d50608e567298d4c4086
[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" "8cbe3d9072cfb1bb3f276ff09cb4bf3acdd68056eef9d50608e567298d4c4086", kill_on_drop: false }`
[INFO] [stderr]     Checking dockerfile-rs v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builder.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |     instructions: Vec<Box<StorageInstruction>>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StorageInstruction`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:615:16
[INFO] [stdout]     |
[INFO] [stdout] 615 |     inner: Box<Instruction>,
[INFO] [stdout]     |                ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/builder.rs:37:27
[INFO] [stdout]    |
[INFO] [stdout] 37 |     instructions: Vec<Box<StorageInstruction>>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StorageInstruction`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:615:16
[INFO] [stdout]     |
[INFO] [stdout] 615 |     inner: Box<Instruction>,
[INFO] [stdout]     |                ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "8cbe3d9072cfb1bb3f276ff09cb4bf3acdd68056eef9d50608e567298d4c4086", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cbe3d9072cfb1bb3f276ff09cb4bf3acdd68056eef9d50608e567298d4c4086", kill_on_drop: false }`
[INFO] [stdout] 8cbe3d9072cfb1bb3f276ff09cb4bf3acdd68056eef9d50608e567298d4c4086