[INFO] fetching crate gosyn 0.1.1...
[INFO] testing gosyn-0.1.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate gosyn 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate gosyn 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 gosyn 0.1.1
[INFO] finished tweaking crates.io crate gosyn 0.1.1
[INFO] tweaked toml for crates.io crate gosyn 0.1.1 written to /workspace/builds/worker-14/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 rgb v0.8.32
[INFO] [stderr]   Downloaded strum_macros v0.23.1
[INFO] [stderr]   Downloaded inferno v0.10.12
[INFO] [stderr]   Downloaded findshlibs v0.10.2
[INFO] [stderr]   Downloaded cpp_demangle v0.3.5
[INFO] [stderr]   Downloaded debugid v0.7.3
[INFO] [stderr]   Downloaded symbolic-common v8.7.0
[INFO] [stderr]   Downloaded pprof v0.6.2
[INFO] [stderr]   Downloaded strum v0.23.0
[INFO] [stderr]   Downloaded str_stack v0.1.0
[INFO] [stderr]   Downloaded symbolic-demangle v8.7.0
[INFO] [stderr]   Downloaded unic-ucd-category v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 662ebebae888c86edb6332ec209cb2546911e9070a4c49c4af876f73f2c7dc17
[INFO] running `Command { std: "docker" "start" "-a" "662ebebae888c86edb6332ec209cb2546911e9070a4c49c4af876f73f2c7dc17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "662ebebae888c86edb6332ec209cb2546911e9070a4c49c4af876f73f2c7dc17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "662ebebae888c86edb6332ec209cb2546911e9070a4c49c4af876f73f2c7dc17", kill_on_drop: false }`
[INFO] [stdout] 662ebebae888c86edb6332ec209cb2546911e9070a4c49c4af876f73f2c7dc17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] e4670ddc2e7bc5ff6cbf07ce6ae2df5f5e087c985647d8220f535be0fd351912
[INFO] running `Command { std: "docker" "start" "-a" "e4670ddc2e7bc5ff6cbf07ce6ae2df5f5e087c985647d8220f535be0fd351912", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling unic-ucd-category v0.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling strum_macros v0.23.1
[INFO] [stderr]    Compiling strum v0.23.0
[INFO] [stderr]    Compiling gosyn 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(exclusive_range_pattern)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(assert_matches)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(bool_to_option)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(custom_inner_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(stmt_expr_attributes)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gosyn` due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "e4670ddc2e7bc5ff6cbf07ce6ae2df5f5e087c985647d8220f535be0fd351912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4670ddc2e7bc5ff6cbf07ce6ae2df5f5e087c985647d8220f535be0fd351912", kill_on_drop: false }`
[INFO] [stdout] e4670ddc2e7bc5ff6cbf07ce6ae2df5f5e087c985647d8220f535be0fd351912