[INFO] fetching crate cactusref 0.5.0...
[INFO] checking cactusref-0.5.0 against 1.95.0 for pr-155915
[INFO] extracting crate cactusref 0.5.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate cactusref 0.5.0
[INFO] finished tweaking crates.io crate cactusref 0.5.0
[INFO] tweaked toml for crates.io crate cactusref 0.5.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cactusref 0.5.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 53 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.10.2 (available: v0.11.10)
[INFO] [stderr]       Adding hashbrown v0.14.5 (available: v0.17.1)
[INFO] [stderr]       Adding rustc-hash v1.1.0 (available: v2.1.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded version-sync v0.9.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e922a992efe606891bb0de15196e080250a328724c1efa382d6f2f37871ec10
[INFO] running `Command { std: "docker" "start" "-a" "5e922a992efe606891bb0de15196e080250a328724c1efa382d6f2f37871ec10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e922a992efe606891bb0de15196e080250a328724c1efa382d6f2f37871ec10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e922a992efe606891bb0de15196e080250a328724c1efa382d6f2f37871ec10", kill_on_drop: false }`
[INFO] [stdout] 5e922a992efe606891bb0de15196e080250a328724c1efa382d6f2f37871ec10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b35fbc6ea7b51225d7ad89db9b3c29f3e35e7cb73a519518148577ea37f250c8
[INFO] running `Command { std: "docker" "start" "-a" "b35fbc6ea7b51225d7ad89db9b3c29f3e35e7cb73a519518148577ea37f250c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]     Checking hashbrown v0.17.1
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]    Compiling pulldown-cmark v0.9.6
[INFO] [stderr]     Checking semver v1.0.28
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking toml_datetime v0.6.11
[INFO] [stderr]     Checking serde_spanned v0.6.9
[INFO] [stderr]     Checking cactusref v0.5.0 (/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(
[INFO] [stdout] 2 | |     allocator_api,
[INFO] [stdout] 3 | |     core_intrinsics,
[INFO] [stdout] 4 | |     dropck_eyepatch,
[INFO] [stdout] ... |
[INFO] [stdout] 7 | |     slice_ptr_get
[INFO] [stdout] 8 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary qualification
[INFO] [stdout]     --> src/rc.rs:1004:30
[INFO] [stdout]      |
[INFO] [stdout] 1004 |             let value_size = mem::size_of_val(&*box_ptr);
[INFO] [stdout]      |                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:26:9
[INFO] [stdout]      |
[INFO] [stdout]   26 | #![warn(unused_qualifications)]
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: remove the unnecessary path segments
[INFO] [stdout]      |
[INFO] [stdout] 1004 -             let value_size = mem::size_of_val(&*box_ptr);
[INFO] [stdout] 1004 +             let value_size = size_of_val(&*box_ptr);
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cactusref` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b35fbc6ea7b51225d7ad89db9b3c29f3e35e7cb73a519518148577ea37f250c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b35fbc6ea7b51225d7ad89db9b3c29f3e35e7cb73a519518148577ea37f250c8", kill_on_drop: false }`
[INFO] [stdout] b35fbc6ea7b51225d7ad89db9b3c29f3e35e7cb73a519518148577ea37f250c8
