[INFO] fetching crate light_arena 1.0.1...
[INFO] checking light_arena-1.0.1 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate light_arena 1.0.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate light_arena 1.0.1 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate light_arena 1.0.1
[INFO] finished tweaking crates.io crate light_arena 1.0.1
[INFO] tweaked toml for crates.io crate light_arena 1.0.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dd3c10d9eda337c28f02249aeaaab5f56c8eb4069571207a46d25561c9d35efd
[INFO] running `Command { std: "docker" "start" "-a" "dd3c10d9eda337c28f02249aeaaab5f56c8eb4069571207a46d25561c9d35efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd3c10d9eda337c28f02249aeaaab5f56c8eb4069571207a46d25561c9d35efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd3c10d9eda337c28f02249aeaaab5f56c8eb4069571207a46d25561c9d35efd", kill_on_drop: false }`
[INFO] [stdout] dd3c10d9eda337c28f02249aeaaab5f56c8eb4069571207a46d25561c9d35efd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1fe6fbe8a41a35707f79ac00c32a3db1aa7a8d639fdd4dacf70e92245ff28fdb
[INFO] running `Command { std: "docker" "start" "-a" "1fe6fbe8a41a35707f79ac00c32a3db1aa7a8d639fdd4dacf70e92245ff28fdb", kill_on_drop: false }`
[INFO] [stderr]     Checking light_arena v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/lib.rs:181:15
[INFO] [stdout]     |
[INFO] [stdout] 181 |     let add: &Eval = allocator.alloc(Add(4));
[INFO] [stdout]     |               ^^^^ help: use `dyn`: `dyn Eval`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/lib.rs:182:15
[INFO] [stdout]     |
[INFO] [stdout] 182 |     let sub: &Eval = allocator.alloc(Subtract { x: 2 });
[INFO] [stdout]     |               ^^^^ help: use `dyn`: `dyn Eval`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/lib.rs:183:15
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let shl: &Eval = allocator.alloc(ShiftLeft);
[INFO] [stdout]     |               ^^^^ help: use `dyn`: `dyn Eval`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> tests/lib.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |     let clamp: &Eval = allocator.alloc(Clamp::new(-2, 3));
[INFO] [stdout]     |                 ^^^^ help: use `dyn`: `dyn Eval`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "1fe6fbe8a41a35707f79ac00c32a3db1aa7a8d639fdd4dacf70e92245ff28fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fe6fbe8a41a35707f79ac00c32a3db1aa7a8d639fdd4dacf70e92245ff28fdb", kill_on_drop: false }`
[INFO] [stdout] 1fe6fbe8a41a35707f79ac00c32a3db1aa7a8d639fdd4dacf70e92245ff28fdb