[INFO] fetching crate jstring 0.1.0...
[INFO] testing jstring-0.1.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate jstring 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate jstring 0.1.0
[INFO] finished tweaking crates.io crate jstring 0.1.0
[INFO] tweaked toml for crates.io crate jstring 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate jstring 0.1.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c880f7720ca6a3d994ac502b2c6ce9cc05b2fd34bd06ec53a1a4db0e1ebd446
[INFO] running `Command { std: "docker" "start" "-a" "3c880f7720ca6a3d994ac502b2c6ce9cc05b2fd34bd06ec53a1a4db0e1ebd446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c880f7720ca6a3d994ac502b2c6ce9cc05b2fd34bd06ec53a1a4db0e1ebd446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c880f7720ca6a3d994ac502b2c6ce9cc05b2fd34bd06ec53a1a4db0e1ebd446", kill_on_drop: false }`
[INFO] [stdout] 3c880f7720ca6a3d994ac502b2c6ce9cc05b2fd34bd06ec53a1a4db0e1ebd446
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57853c75791dd788db926d73e349f673f16b9f4b5af1571711e5596d76a26fa9
[INFO] running `Command { std: "docker" "start" "-a" "57853c75791dd788db926d73e349f673f16b9f4b5af1571711e5596d76a26fa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling jstring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
[INFO] [stdout]   --> src/raw_string.rs:88:18
[INFO] [stdout]    |
[INFO] [stdout] 88 |         unsafe { &mut *(self.get_bytes() as *const [u8] as *mut [u8]) }
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
[INFO] [stdout]    = note: `#[deny(invalid_reference_casting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jstring` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "57853c75791dd788db926d73e349f673f16b9f4b5af1571711e5596d76a26fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57853c75791dd788db926d73e349f673f16b9f4b5af1571711e5596d76a26fa9", kill_on_drop: false }`
[INFO] [stdout] 57853c75791dd788db926d73e349f673f16b9f4b5af1571711e5596d76a26fa9