[INFO] fetching crate build-utils 0.1.0...
[INFO] checking build-utils-0.1.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate build-utils 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate build-utils 0.1.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate build-utils 0.1.0
[INFO] finished tweaking crates.io crate build-utils 0.1.0
[INFO] tweaked toml for crates.io crate build-utils 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1d1e7c16ea89b5025ffb272a7629ae9b3f91a5e6bc7f188a4fecbcc3c468a3e
[INFO] running `Command { std: "docker" "start" "-a" "d1d1e7c16ea89b5025ffb272a7629ae9b3f91a5e6bc7f188a4fecbcc3c468a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1d1e7c16ea89b5025ffb272a7629ae9b3f91a5e6bc7f188a4fecbcc3c468a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1d1e7c16ea89b5025ffb272a7629ae9b3f91a5e6bc7f188a4fecbcc3c468a3e", kill_on_drop: false }`
[INFO] [stdout] d1d1e7c16ea89b5025ffb272a7629ae9b3f91a5e6bc7f188a4fecbcc3c468a3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93a7f13ac493563f82f0aea89a18a2c068d844e72fdbd9b0e28629dc98f000cf
[INFO] running `Command { std: "docker" "start" "-a" "93a7f13ac493563f82f0aea89a18a2c068d844e72fdbd9b0e28629dc98f000cf", kill_on_drop: false }`
[INFO] [stderr]     Checking build-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::util::create_temporary_path`
[INFO] [stdout]    --> src/build/meson.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |     use crate::util::create_temporary_path;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_persistent` is never used
[INFO] [stdout]   --> src/util.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl TemporaryPath {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 85 |     pub fn from_persistent(path: PathBuf) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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/util.rs:96:37
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut_released = unsafe { &mut *(&self.inner.released as *const bool as *mut bool) };
[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] [stdout] warning: associated function `from_persistent` is never used
[INFO] [stdout]   --> src/util.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | impl TemporaryPath {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 85 |     pub fn from_persistent(path: PathBuf) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[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/util.rs:96:37
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut_released = unsafe { &mut *(&self.inner.released as *const bool as *mut bool) };
[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] [stdout] error: aborting due to 1 previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `build-utils` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `build-utils` (lib test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "93a7f13ac493563f82f0aea89a18a2c068d844e72fdbd9b0e28629dc98f000cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93a7f13ac493563f82f0aea89a18a2c068d844e72fdbd9b0e28629dc98f000cf", kill_on_drop: false }`
[INFO] [stdout] 93a7f13ac493563f82f0aea89a18a2c068d844e72fdbd9b0e28629dc98f000cf
