[INFO] fetching crate region 3.0.2...
[INFO] building region-3.0.2 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate region 3.0.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate region 3.0.2
[INFO] finished tweaking crates.io crate region 3.0.2
[INFO] tweaked toml for crates.io crate region 3.0.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate region 3.0.2 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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 17 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.9.4)
[INFO] [stderr]       Adding mach2 v0.4.3 (available: v0.5.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.61.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b429f96430c2a6a1ef23dd655444fd1973e1edd386c7389d9d364021671bfb8
[INFO] running `Command { std: "docker" "start" "-a" "8b429f96430c2a6a1ef23dd655444fd1973e1edd386c7389d9d364021671bfb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b429f96430c2a6a1ef23dd655444fd1973e1edd386c7389d9d364021671bfb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b429f96430c2a6a1ef23dd655444fd1973e1edd386c7389d9d364021671bfb8", kill_on_drop: false }`
[INFO] [stdout] 8b429f96430c2a6a1ef23dd655444fd1973e1edd386c7389d9d364021671bfb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 792210a96bf2503870a46bfc193cbb16ea58d6df34f96a8c8ec2ad5ef7dba7e9
[INFO] running `Command { std: "docker" "start" "-a" "792210a96bf2503870a46bfc193cbb16ea58d6df34f96a8c8ec2ad5ef7dba7e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling region v3.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `Command { std: "docker" "inspect" "792210a96bf2503870a46bfc193cbb16ea58d6df34f96a8c8ec2ad5ef7dba7e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792210a96bf2503870a46bfc193cbb16ea58d6df34f96a8c8ec2ad5ef7dba7e9", kill_on_drop: false }`
[INFO] [stdout] 792210a96bf2503870a46bfc193cbb16ea58d6df34f96a8c8ec2ad5ef7dba7e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42a31e89948a0a999a018ff533d5c7c2ce5f3eafe0c3af39f46a1a03328cd5a8
[INFO] running `Command { std: "docker" "start" "-a" "42a31e89948a0a999a018ff533d5c7c2ce5f3eafe0c3af39f46a1a03328cd5a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling mmap-fixed v0.1.6
[INFO] [stderr]    Compiling region v3.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: casting references to a bigger memory layout than the backing allocation is undefined behavior, even if the reference is unused
[INFO] [stdout]    --> src/protect.rs:182:7
[INFO] [stdout]     |
[INFO] [stdout] 179 |     let address = &mut protect_can_alter_text_segments as *mut _ as *mut u8;
[INFO] [stdout]     |                   ---------------------------------------------------------
[INFO] [stdout]     |                   |    |
[INFO] [stdout]     |                   |    backing allocation comes from here
[INFO] [stdout]     |                   casting happened here
[INFO] [stdout] ...
[INFO] [stdout] 182 |       *address = 0x90;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: casting from `fn() {protect::tests::protect_can_alter_text_segments}` (0 bytes) to `u8` (1 bytes)
[INFO] [stdout]     = note: `#[deny(invalid_reference_casting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `region` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "42a31e89948a0a999a018ff533d5c7c2ce5f3eafe0c3af39f46a1a03328cd5a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42a31e89948a0a999a018ff533d5c7c2ce5f3eafe0c3af39f46a1a03328cd5a8", kill_on_drop: false }`
[INFO] [stdout] 42a31e89948a0a999a018ff533d5c7c2ce5f3eafe0c3af39f46a1a03328cd5a8