[INFO] fetching crate loader-rs 0.7.0... [INFO] testing loader-rs-0.7.0 against 1.59.0 for beta-1.60-1 [INFO] extracting crate loader-rs 0.7.0 into /workspace/builds/worker-15/source [INFO] validating manifest of crates.io crate loader-rs 0.7.0 on toolchain 1.59.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-15/source/rust-toolchain [INFO] started tweaking crates.io crate loader-rs 0.7.0 [INFO] finished tweaking crates.io crate loader-rs 0.7.0 [INFO] tweaked toml for crates.io crate loader-rs 0.7.0 written to /workspace/builds/worker-15/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 787187e8405a4f7e407da08866d584fbb67b7cd3332f325b22220d935082030f [INFO] running `Command { std: "docker" "start" "-a" "787187e8405a4f7e407da08866d584fbb67b7cd3332f325b22220d935082030f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "787187e8405a4f7e407da08866d584fbb67b7cd3332f325b22220d935082030f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "787187e8405a4f7e407da08866d584fbb67b7cd3332f325b22220d935082030f", kill_on_drop: false }` [INFO] [stdout] 787187e8405a4f7e407da08866d584fbb67b7cd3332f325b22220d935082030f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e12681b40cb94339635fcfda19c3fcef953dbfe6cfc45bd88ad0dba21b1d027b [INFO] running `Command { std: "docker" "start" "-a" "e12681b40cb94339635fcfda19c3fcef953dbfe6cfc45bd88ad0dba21b1d027b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.119 [INFO] [stderr] Compiling bytes v0.5.6 [INFO] [stderr] Compiling pin-project-lite v0.1.12 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling futures-io v0.3.21 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Compiling httpdate v0.3.2 [INFO] [stderr] Compiling rustversion v1.0.6 [INFO] [stderr] Compiling cached_proc_macro_types v0.1.0 [INFO] [stderr] Compiling strum v0.24.0 [INFO] [stderr] Compiling async-rwlock v1.3.0 [INFO] [stderr] Compiling tracing v0.1.31 [INFO] [stderr] Compiling want v0.3.0 [INFO] [stderr] Compiling serde_urlencoded v0.7.1 [INFO] [stderr] Compiling pin-project-internal v1.0.10 [INFO] [stderr] Compiling mime_guess v2.0.4 [INFO] [stderr] Compiling darling_core v0.13.1 [INFO] [stderr] Compiling http-body v0.3.1 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling openssl-sys v0.9.72 [INFO] [stderr] Compiling socket2 v0.3.19 [INFO] [stderr] Compiling flate2 v1.0.22 [INFO] [stderr] Compiling parking_lot_core v0.9.1 [INFO] [stderr] Compiling strum_macros v0.24.0 [INFO] [stderr] Compiling tokio v1.17.0 [INFO] [stderr] Compiling parking_lot v0.12.0 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling openssl v0.10.38 [INFO] [stderr] Compiling async-compression v0.3.12 [INFO] [stderr] Compiling pin-project v1.0.10 [INFO] [stderr] Compiling tokio v0.2.25 [INFO] [stderr] Compiling tracing-futures v0.2.5 [INFO] [stderr] Compiling darling_macro v0.13.1 [INFO] [stderr] Compiling darling v0.13.1 [INFO] [stderr] Compiling cached_proc_macro v0.11.0 [INFO] [stderr] Compiling native-tls v0.2.8 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling tokio-tls v0.3.1 [INFO] [stderr] Compiling h2 v0.2.7 [INFO] [stderr] Compiling cached v0.32.0 [INFO] [stderr] Compiling hyper v0.13.10 [INFO] [stderr] Compiling hyper-tls v0.4.3 [INFO] [stderr] Compiling reqwest v0.10.10 [INFO] [stderr] Compiling loader-rs v0.7.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:43:1 [INFO] [stdout] | [INFO] [stdout] 43 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:43:12 [INFO] [stdout] | [INFO] [stdout] 43 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/lib.rs:36:5 [INFO] [stdout] | [INFO] [stdout] 36 | warnings, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[warn(incomplete_features)]` implied by `#[warn(warnings)]` [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `loader-rs` due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "e12681b40cb94339635fcfda19c3fcef953dbfe6cfc45bd88ad0dba21b1d027b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e12681b40cb94339635fcfda19c3fcef953dbfe6cfc45bd88ad0dba21b1d027b", kill_on_drop: false }` [INFO] [stdout] e12681b40cb94339635fcfda19c3fcef953dbfe6cfc45bd88ad0dba21b1d027b