[INFO] fetching crate zero_based_index 0.1.1...
[INFO] testing zero_based_index-0.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate zero_based_index 0.1.1 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate zero_based_index 0.1.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-73/source/.cargo/config.toml
[INFO] started tweaking crates.io crate zero_based_index 0.1.1
[INFO] finished tweaking crates.io crate zero_based_index 0.1.1
[INFO] tweaked toml for crates.io crate zero_based_index 0.1.1 written to /workspace/builds/worker-73/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded relative-path v1.7.0
[INFO] [stderr]   Downloaded include_display_mode_tex v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408e9b320ff583efe0853b2e940ba2b130438094b9834efd2b58051274027d8f
[INFO] running `Command { std: "docker" "start" "-a" "408e9b320ff583efe0853b2e940ba2b130438094b9834efd2b58051274027d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408e9b320ff583efe0853b2e940ba2b130438094b9834efd2b58051274027d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408e9b320ff583efe0853b2e940ba2b130438094b9834efd2b58051274027d8f", kill_on_drop: false }`
[INFO] [stdout] 408e9b320ff583efe0853b2e940ba2b130438094b9834efd2b58051274027d8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa7c2d0bc65e397900085e91a03d09eb41840e44047e0ff525a35c11ae868a79
[INFO] running `Command { std: "docker" "start" "-a" "fa7c2d0bc65e397900085e91a03d09eb41840e44047e0ff525a35c11ae868a79", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling relative-path v1.7.0
[INFO] [stderr]    Compiling include_display_mode_tex v0.1.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/include_display_mode_tex-0.1.2/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `include_display_mode_tex` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "fa7c2d0bc65e397900085e91a03d09eb41840e44047e0ff525a35c11ae868a79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7c2d0bc65e397900085e91a03d09eb41840e44047e0ff525a35c11ae868a79", kill_on_drop: false }`
[INFO] [stdout] fa7c2d0bc65e397900085e91a03d09eb41840e44047e0ff525a35c11ae868a79