[INFO] fetching crate fasteval2 2.1.1... [INFO] building fasteval2-2.1.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate fasteval2 2.1.1 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate fasteval2 2.1.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate fasteval2 2.1.1 [INFO] finished tweaking crates.io crate fasteval2 2.1.1 [INFO] tweaked toml for crates.io crate fasteval2 2.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate fasteval2 2.1.1 already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] de5f9fa7a4ca4620702935fbd5e34e3a2f3f675fb1afdc20368cdf59edc0a0c4 [INFO] running `Command { std: "docker" "start" "-a" "de5f9fa7a4ca4620702935fbd5e34e3a2f3f675fb1afdc20368cdf59edc0a0c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "de5f9fa7a4ca4620702935fbd5e34e3a2f3f675fb1afdc20368cdf59edc0a0c4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "de5f9fa7a4ca4620702935fbd5e34e3a2f3f675fb1afdc20368cdf59edc0a0c4", kill_on_drop: false }` [INFO] [stdout] de5f9fa7a4ca4620702935fbd5e34e3a2f3f675fb1afdc20368cdf59edc0a0c4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 78257b30ba790d57485126cdac0092bdc807420a7c5322fa9e2c793f2d91d0eb [INFO] running `Command { std: "docker" "start" "-a" "78257b30ba790d57485126cdac0092bdc807420a7c5322fa9e2c793f2d91d0eb", kill_on_drop: false }` [INFO] [stderr] Compiling fasteval2 v2.1.1 (/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/compiler.rs:832:25 [INFO] [stdout] | [INFO] [stdout] 832 | &mut *(&pslab.char_buf as *const _ as *mut _) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] = note: `#[deny(invalid_reference_casting)]` on by default [INFO] [stdout] [INFO] [stdout] [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/evaler.rs:458:17 [INFO] [stdout] | [INFO] [stdout] 458 | &mut *(&slab.ps.char_buf as *const _ as *mut _) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] [INFO] [stdout] [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/evaler.rs:466:21 [INFO] [stdout] | [INFO] [stdout] 466 | &mut *(&slab.ps.char_buf as *const _ as *mut _) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] [INFO] [stdout] [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/evaler.rs:686:17 [INFO] [stdout] | [INFO] [stdout] 686 | &mut *(&slab.ps.char_buf as *const _ as *mut _) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] [INFO] [stdout] [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/evaler.rs:694:21 [INFO] [stdout] | [INFO] [stdout] 694 | &mut *(&slab.ps.char_buf as *const _ as *mut _) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: for more information, visit [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `fasteval2` (lib) due to 5 previous errors [INFO] running `Command { std: "docker" "inspect" "78257b30ba790d57485126cdac0092bdc807420a7c5322fa9e2c793f2d91d0eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "78257b30ba790d57485126cdac0092bdc807420a7c5322fa9e2c793f2d91d0eb", kill_on_drop: false }` [INFO] [stdout] 78257b30ba790d57485126cdac0092bdc807420a7c5322fa9e2c793f2d91d0eb