[INFO] fetching crate i-o 0.4.7...
[INFO] testing i-o-0.4.7 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate i-o 0.4.7 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate i-o 0.4.7
[INFO] finished tweaking crates.io crate i-o 0.4.7
[INFO] tweaked toml for crates.io crate i-o 0.4.7 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate i-o 0.4.7 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 52 packages to latest compatible versions
[INFO] [stderr]       Adding quickcheck v0.7.2 (available: v1.0.3)
[INFO] [stderr]       Adding quickcheck_macros v0.7.0 (available: v1.1.0)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.9.2)
[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] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 16559726a1159281188753d5c021abc840777eeb707a8092fdba15b176c3a3d5
[INFO] running `Command { std: "docker" "start" "-a" "16559726a1159281188753d5c021abc840777eeb707a8092fdba15b176c3a3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16559726a1159281188753d5c021abc840777eeb707a8092fdba15b176c3a3d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16559726a1159281188753d5c021abc840777eeb707a8092fdba15b176c3a3d5", kill_on_drop: false }`
[INFO] [stdout] 16559726a1159281188753d5c021abc840777eeb707a8092fdba15b176c3a3d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 7b567a92c190c62f8ed69d97be27559f583353cba910f06fe39452d1303b2001
[INFO] running `Command { std: "docker" "start" "-a" "7b567a92c190c62f8ed69d97be27559f583353cba910f06fe39452d1303b2001", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling ptr v0.2.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling hash-table v0.2.5
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling containers v0.9.13
[INFO] [stderr]    Compiling abort v0.1.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling rel v0.2.0
[INFO] [stderr]    Compiling i-o v0.4.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling heap v0.1.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling fallible v0.1.3
[INFO] [stderr] warning: i-o@0.4.7: Cannot set `RUSTC_BOOTSTRAP=1` from build script of `i-o v0.4.7 (/opt/rustwide/workdir)`.
[INFO] [stderr] note: Crates cannot set `RUSTC_BOOTSTRAP` themselves, as doing so would subvert the stability guarantees of Rust for your project.
[INFO] [stderr]    Compiling loca v0.7.4
[INFO] [stderr]    Compiling default_allocator v0.3.0
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:24:46
[INFO] [stdout]    |
[INFO] [stdout] 24 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:31:46
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:24:46
[INFO] [stdout]    |
[INFO] [stdout] 24 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:31:46
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/default_allocator-0.3.0/src/lib.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `default_allocator` (lib) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "7b567a92c190c62f8ed69d97be27559f583353cba910f06fe39452d1303b2001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b567a92c190c62f8ed69d97be27559f583353cba910f06fe39452d1303b2001", kill_on_drop: false }`
[INFO] [stdout] 7b567a92c190c62f8ed69d97be27559f583353cba910f06fe39452d1303b2001