[INFO] fetching crate merde_core 10.0.6...
[INFO] checking merde_core-10.0.6 against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] extracting crate merde_core 10.0.6 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate merde_core 10.0.6
[INFO] finished tweaking crates.io crate merde_core 10.0.6
[INFO] tweaked toml for crates.io crate merde_core 10.0.6 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate merde_core 10.0.6 on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 97 packages to latest compatible versions
[INFO] [stderr]       Adding compact_bytes v0.1.4 (available: v0.2.1)
[INFO] [stderr]       Adding compact_str v0.8.1 (available: v0.9.0)
[INFO] [stderr]       Adding rusqlite v0.35.0 (available: v0.38.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3ed638af9fca0f9bf492e57932ba219f15a28c93029d348a2e390c7fe7779cf
[INFO] running `Command { std: "docker" "start" "-a" "b3ed638af9fca0f9bf492e57932ba219f15a28c93029d348a2e390c7fe7779cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3ed638af9fca0f9bf492e57932ba219f15a28c93029d348a2e390c7fe7779cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3ed638af9fca0f9bf492e57932ba219f15a28c93029d348a2e390c7fe7779cf", kill_on_drop: false }`
[INFO] [stdout] b3ed638af9fca0f9bf492e57932ba219f15a28c93029d348a2e390c7fe7779cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c552cf50720d63e1e7ee754fed4c3aa219442da60178d8b9d6c5b78c5c610e6
[INFO] running `Command { std: "docker" "start" "-a" "5c552cf50720d63e1e7ee754fed4c3aa219442da60178d8b9d6c5b78c5c610e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]     Checking winnow v0.7.14
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking serde_spanned v1.0.4
[INFO] [stderr]     Checking toml_datetime v1.0.0+spec-1.1.0
[INFO] [stderr]     Checking getrandom v0.4.1
[INFO] [stderr]     Checking deranged v0.5.6
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]     Checking similar v2.7.0
[INFO] [stderr]    Compiling time-macros v0.2.27
[INFO] [stderr]     Checking ordered-float v5.1.0
[INFO] [stderr]     Checking compact_str v0.8.1
[INFO] [stderr]     Checking glob v0.3.3
[INFO] [stderr]     Checking tempfile v3.25.0
[INFO] [stderr]    Compiling syn v2.0.115
[INFO] [stderr]     Checking insta v1.46.3
[INFO] [stderr]     Checking compact_bytes v0.1.4
[INFO] [stdout] error: not automatically applying `DerefMut` through union field to target that might have `Drop` glue
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/compact_bytes-0.1.4/src/lib.rs:359:13
[INFO] [stdout]     |
[INFO] [stdout] 359 |             self.heap.set_len(new_len);
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: writing to this reference calls the destructor for the old value
[INFO] [stdout]     = help: add an explicit `*` if that is desired, or call `ptr::write` to not run the destructor
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `compact_bytes` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "5c552cf50720d63e1e7ee754fed4c3aa219442da60178d8b9d6c5b78c5c610e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c552cf50720d63e1e7ee754fed4c3aa219442da60178d8b9d6c5b78c5c610e6", kill_on_drop: false }`
[INFO] [stdout] 5c552cf50720d63e1e7ee754fed4c3aa219442da60178d8b9d6c5b78c5c610e6