[INFO] fetching crate caller_modpath 0.1.1...
[INFO] testing caller_modpath-0.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate caller_modpath 0.1.1 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate caller_modpath 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] started tweaking crates.io crate caller_modpath 0.1.1
[INFO] finished tweaking crates.io crate caller_modpath 0.1.1
[INFO] tweaked toml for crates.io crate caller_modpath 0.1.1 written to /workspace/builds/worker-19/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]  Downloading crates ...
[INFO] [stderr]   Downloaded caller_modpath_macros v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] e95d04b7b162c0da21ad81ff8780e346e17d4a27fec989a18a5e1c4706c6f4d8
[INFO] running `Command { std: "docker" "start" "-a" "e95d04b7b162c0da21ad81ff8780e346e17d4a27fec989a18a5e1c4706c6f4d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e95d04b7b162c0da21ad81ff8780e346e17d4a27fec989a18a5e1c4706c6f4d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e95d04b7b162c0da21ad81ff8780e346e17d4a27fec989a18a5e1c4706c6f4d8", kill_on_drop: false }`
[INFO] [stdout] e95d04b7b162c0da21ad81ff8780e346e17d4a27fec989a18a5e1c4706c6f4d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 78e55b8b2a332bff3fb795756e79bf3f35456f360e895c98e019eec5a2c56cbd
[INFO] running `Command { std: "docker" "start" "-a" "78e55b8b2a332bff3fb795756e79bf3f35456f360e895c98e019eec5a2c56cbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling caller_modpath_macros v0.1.1
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling cargo-manifest v0.2.6
[INFO] [stderr]    Compiling caller_modpath v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> 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 `caller_modpath` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "78e55b8b2a332bff3fb795756e79bf3f35456f360e895c98e019eec5a2c56cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78e55b8b2a332bff3fb795756e79bf3f35456f360e895c98e019eec5a2c56cbd", kill_on_drop: false }`
[INFO] [stdout] 78e55b8b2a332bff3fb795756e79bf3f35456f360e895c98e019eec5a2c56cbd