[INFO] fetching crate plugin_macros 0.1.0...
[INFO] checking plugin_macros-0.1.0 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate plugin_macros 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate plugin_macros 0.1.0 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plugin_macros 0.1.0
[INFO] finished tweaking crates.io crate plugin_macros 0.1.0
[INFO] tweaked toml for crates.io crate plugin_macros 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fcc6292631ce9482e6e01babb46d89d17bfa3d440fb0a238076f93b052b5031
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7fcc6292631ce9482e6e01babb46d89d17bfa3d440fb0a238076f93b052b5031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fcc6292631ce9482e6e01babb46d89d17bfa3d440fb0a238076f93b052b5031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fcc6292631ce9482e6e01babb46d89d17bfa3d440fb0a238076f93b052b5031", kill_on_drop: false }`
[INFO] [stdout] 7fcc6292631ce9482e6e01babb46d89d17bfa3d440fb0a238076f93b052b5031
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a8c3efef9b2d9939191119eb7abe7560c56e6bf3de25bb75f41b00d31f18a17
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1a8c3efef9b2d9939191119eb7abe7560c56e6bf3de25bb75f41b00d31f18a17", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking hashbrown v0.1.8
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking plugin_macros v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 44 |     plugins: HashMap<String, Box<Plugin>>,
[INFO] [stdout]    |                                  ^^^^^^ help: use `dyn`: `dyn Plugin`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:57:66
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn get_by_file_name(&self, name: &String) -> Option<&Box<Plugin>> {
[INFO] [stdout]    |                                                                  ^^^^^^ help: use `dyn`: `dyn Plugin`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:78:43
[INFO] [stdout]    |
[INFO] [stdout] 78 |             let func: Symbol<fn() -> *mut Plugin> = self
[INFO] [stdout]    |                                           ^^^^^^ help: use `dyn`: `dyn Plugin`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 44 |     plugins: HashMap<String, Box<Plugin>>,
[INFO] [stdout]    |                                  ^^^^^^ help: use `dyn`: `dyn Plugin`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:57:66
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn get_by_file_name(&self, name: &String) -> Option<&Box<Plugin>> {
[INFO] [stdout]    |                                                                  ^^^^^^ help: use `dyn`: `dyn Plugin`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:78:43
[INFO] [stdout]    |
[INFO] [stdout] 78 |             let func: Symbol<fn() -> *mut Plugin> = self
[INFO] [stdout]    |                                           ^^^^^^ help: use `dyn`: `dyn Plugin`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.10s
[INFO] running `Command { std: "docker" "inspect" "1a8c3efef9b2d9939191119eb7abe7560c56e6bf3de25bb75f41b00d31f18a17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a8c3efef9b2d9939191119eb7abe7560c56e6bf3de25bb75f41b00d31f18a17", kill_on_drop: false }`
[INFO] [stdout] 1a8c3efef9b2d9939191119eb7abe7560c56e6bf3de25bb75f41b00d31f18a17