[INFO] fetching crate jstring 0.1.0...
[INFO] testing jstring-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate jstring 0.1.0 into /workspace/builds/worker-6-tc1/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-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate jstring 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ecd0a5e87563da6c258e3a846a0bcfd3e5e0fb7627864a349ee062eea0e3621
[INFO] running `Command { std: "docker" "start" "-a" "9ecd0a5e87563da6c258e3a846a0bcfd3e5e0fb7627864a349ee062eea0e3621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ecd0a5e87563da6c258e3a846a0bcfd3e5e0fb7627864a349ee062eea0e3621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ecd0a5e87563da6c258e3a846a0bcfd3e5e0fb7627864a349ee062eea0e3621", kill_on_drop: false }`
[INFO] [stdout] 9ecd0a5e87563da6c258e3a846a0bcfd3e5e0fb7627864a349ee062eea0e3621
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75017e449cc8dad0746d931483f07be3c2d6acd8b1a3ebd1f11ffd9ba79b104d
[INFO] running `Command { std: "docker" "start" "-a" "75017e449cc8dad0746d931483f07be3c2d6acd8b1a3ebd1f11ffd9ba79b104d", 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" "75017e449cc8dad0746d931483f07be3c2d6acd8b1a3ebd1f11ffd9ba79b104d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75017e449cc8dad0746d931483f07be3c2d6acd8b1a3ebd1f11ffd9ba79b104d", kill_on_drop: false }`
[INFO] [stdout] 75017e449cc8dad0746d931483f07be3c2d6acd8b1a3ebd1f11ffd9ba79b104d