[INFO] fetching crate snocat-cli 0.2.0-alpha.10... [INFO] testing snocat-cli-0.2.0-alpha.10 against 1.55.0 for beta-1.56-1 [INFO] extracting crate snocat-cli 0.2.0-alpha.10 into /workspace/builds/worker-49/source [INFO] validating manifest of crates.io crate snocat-cli 0.2.0-alpha.10 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate snocat-cli 0.2.0-alpha.10 [INFO] finished tweaking crates.io crate snocat-cli 0.2.0-alpha.10 [INFO] tweaked toml for crates.io crate snocat-cli 0.2.0-alpha.10 written to /workspace/builds/worker-49/source/Cargo.toml [INFO] crate crates.io crate snocat-cli 0.2.0-alpha.10 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] db4f329f7879bfcf2f40f068154842bfae9d8dcb3fa4191d4ecee6d5600bab75 [INFO] running `Command { std: "docker" "start" "-a" "db4f329f7879bfcf2f40f068154842bfae9d8dcb3fa4191d4ecee6d5600bab75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "db4f329f7879bfcf2f40f068154842bfae9d8dcb3fa4191d4ecee6d5600bab75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "db4f329f7879bfcf2f40f068154842bfae9d8dcb3fa4191d4ecee6d5600bab75", kill_on_drop: false }` [INFO] [stdout] db4f329f7879bfcf2f40f068154842bfae9d8dcb3fa4191d4ecee6d5600bab75 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 940f0db514ed4f7a36684c15e4491b58da41aed7e9497df35bdf6f075a4dbac3 [INFO] running `Command { std: "docker" "start" "-a" "940f0db514ed4f7a36684c15e4491b58da41aed7e9497df35bdf6f075a4dbac3", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling libc v0.2.98 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling once_cell v1.8.0 [INFO] [stderr] Compiling pin-project-lite v0.2.7 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling cc v1.0.69 [INFO] [stderr] Compiling futures-core v0.3.15 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling untrusted v0.7.1 [INFO] [stderr] Compiling futures-sink v0.3.15 [INFO] [stderr] Compiling slab v0.4.3 [INFO] [stderr] Compiling futures-channel v0.3.15 [INFO] [stderr] Compiling futures-task v0.3.15 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling futures-io v0.3.15 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling openssl-probe v0.1.4 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling anyhow v1.0.42 [INFO] [stderr] Compiling ansi_term v0.12.1 [INFO] [stderr] Compiling downcast-rs v1.2.0 [INFO] [stderr] Compiling futures-macro v0.3.15 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling tracing-core v0.1.18 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling futures-util v0.3.15 [INFO] [stderr] Compiling tokio v1.8.1 [INFO] [stderr] Compiling sharded-slab v0.1.1 [INFO] [stderr] Compiling tinyvec v1.2.0 [INFO] [stderr] Compiling thread_local v1.1.3 [INFO] [stderr] Compiling tracing-log v0.1.2 [INFO] [stderr] Compiling ring v0.16.20 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling mio v0.7.13 [INFO] [stderr] Compiling socket2 v0.3.19 [INFO] [stderr] Compiling atty v0.2.14 [INFO] [stderr] Compiling clap v2.33.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling regex-automata v0.1.10 [INFO] [stderr] Compiling yasna v0.4.0 [INFO] [stderr] Compiling matchers v0.0.1 [INFO] [stderr] Compiling pem v0.8.3 [INFO] [stderr] Compiling sct v0.6.1 [INFO] [stderr] Compiling webpki v0.21.4 [INFO] [stderr] Compiling rcgen v0.8.11 [INFO] [stderr] Compiling ct-logs v0.8.0 [INFO] [stderr] Compiling rustls v0.19.1 [INFO] [stderr] Compiling tracing-attributes v0.1.15 [INFO] [stderr] Compiling tokio-macros v1.3.0 [INFO] [stderr] Compiling thiserror-impl v1.0.26 [INFO] [stderr] Compiling pin-project-internal v1.0.7 [INFO] [stderr] Compiling rustls-native-certs v0.5.0 [INFO] [stderr] Compiling thiserror v1.0.26 [INFO] [stderr] Compiling tracing v0.1.26 [INFO] [stderr] Compiling pin-project v1.0.7 [INFO] [stderr] Compiling quinn-proto v0.7.3 [INFO] [stderr] Compiling tracing-futures v0.2.5 [INFO] [stderr] Compiling futures-executor v0.3.15 [INFO] [stderr] Compiling futures v0.3.15 [INFO] [stderr] Compiling tokio-util v0.6.7 [INFO] [stderr] Compiling quinn v0.7.2 [INFO] [stderr] Compiling gen-z v0.1.0 [INFO] [stderr] Compiling tokio-stream v0.1.7 [INFO] [stderr] Compiling tracing-serde v0.1.2 [INFO] [stderr] Compiling tracing-subscriber v0.2.19 [INFO] [stderr] Compiling snocat v0.2.0-alpha.10 [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/snocat-0.2.0-alpha.10/src/lib.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(async_closure)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(backtrace)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | #![feature(drain_filter)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | #![feature(label_break_value)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:7:1 [INFO] [stdout] | [INFO] [stdout] 7 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | #![feature(try_blocks)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:9:1 [INFO] [stdout] | [INFO] [stdout] 9 | #![feature(type_ascription)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [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/snocat-0.2.0-alpha.10/src/lib.rs:12:1 [INFO] [stdout] | [INFO] [stdout] 12 | #![feature(generic_associated_types)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 8 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 `snocat` due to 9 previous errors [INFO] running `Command { std: "docker" "inspect" "940f0db514ed4f7a36684c15e4491b58da41aed7e9497df35bdf6f075a4dbac3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "940f0db514ed4f7a36684c15e4491b58da41aed7e9497df35bdf6f075a4dbac3", kill_on_drop: false }` [INFO] [stdout] 940f0db514ed4f7a36684c15e4491b58da41aed7e9497df35bdf6f075a4dbac3