[INFO] fetching crate referent 0.1.1...
[INFO] testing referent-0.1.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate referent 0.1.1 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate referent 0.1.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate referent 0.1.1
[INFO] finished tweaking crates.io crate referent 0.1.1
[INFO] tweaked toml for crates.io crate referent 0.1.1 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 331e8d5413fa9605cc9cbc0621e046322a43d61ed4a200a37594c37c2cf11dd4
[INFO] running `Command { std: "docker" "start" "-a" "331e8d5413fa9605cc9cbc0621e046322a43d61ed4a200a37594c37c2cf11dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "331e8d5413fa9605cc9cbc0621e046322a43d61ed4a200a37594c37c2cf11dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "331e8d5413fa9605cc9cbc0621e046322a43d61ed4a200a37594c37c2cf11dd4", kill_on_drop: false }`
[INFO] [stdout] 331e8d5413fa9605cc9cbc0621e046322a43d61ed4a200a37594c37c2cf11dd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f77804a6be630eb5e695ba8219b934017aa1709709bfe632be7d27e2b4d4a0c2
[INFO] running `Command { std: "docker" "start" "-a" "f77804a6be630eb5e695ba8219b934017aa1709709bfe632be7d27e2b4d4a0c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling referent 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:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(feature = "nightly", feature(raw))]
[INFO] [stdout]   |                                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `core::raw`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |     use core::raw;
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `core::raw::TraitObject`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:159:28
[INFO] [stdout]     |
[INFO] [stdout] 159 |     pub struct TraitObject(raw::TraitObject);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `core::raw::TraitObject`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:163:25
[INFO] [stdout]     |
[INFO] [stdout] 163 |             TraitObject(raw::TraitObject {
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `core::raw::TraitObject::data`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |                 data: data,
[INFO] [stdout]     |                 ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `core::raw::TraitObject::vtable`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:165:17
[INFO] [stdout]     |
[INFO] [stdout] 165 |                 vtable: meta.0,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `core::raw::TraitObject::data`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:170:13
[INFO] [stdout]     |
[INFO] [stdout] 170 |             self.0.data
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated field `core::raw::TraitObject::vtable`: use pointer metadata APIs instead https://github.com/rust-lang/rust/issues/81513
[INFO] [stdout]    --> src/lib.rs:174:18
[INFO] [stdout]     |
[INFO] [stdout] 174 |             Meta(self.0.vtable)
[INFO] [stdout]     |                  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 7 warnings 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 `referent`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f77804a6be630eb5e695ba8219b934017aa1709709bfe632be7d27e2b4d4a0c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f77804a6be630eb5e695ba8219b934017aa1709709bfe632be7d27e2b4d4a0c2", kill_on_drop: false }`
[INFO] [stdout] f77804a6be630eb5e695ba8219b934017aa1709709bfe632be7d27e2b4d4a0c2
