[INFO] fetching crate namable_closures 0.2.4...
[INFO] checking namable_closures-0.2.4 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate namable_closures 0.2.4 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate namable_closures 0.2.4 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate namable_closures 0.2.4
[INFO] finished tweaking crates.io crate namable_closures 0.2.4
[INFO] tweaked toml for crates.io crate namable_closures 0.2.4 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 342a4a15356dd07af2a2b55911b471ec2b63fa625d2d45d5c6efd09384524ffe
[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" "342a4a15356dd07af2a2b55911b471ec2b63fa625d2d45d5c6efd09384524ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "342a4a15356dd07af2a2b55911b471ec2b63fa625d2d45d5c6efd09384524ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "342a4a15356dd07af2a2b55911b471ec2b63fa625d2d45d5c6efd09384524ffe", kill_on_drop: false }`
[INFO] [stdout] 342a4a15356dd07af2a2b55911b471ec2b63fa625d2d45d5c6efd09384524ffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57d226d2e01bc66910ba5950e7e3e0aca96e46ea1e63e4d392e913535f1bc81d
[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" "57d226d2e01bc66910ba5950e7e3e0aca96e46ea1e63e4d392e913535f1bc81d", kill_on_drop: false }`
[INFO] [stderr]     Checking namable_closures v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ClosureMutRec`
[INFO] [stdout]    --> src/closure_rec.rs:251:34
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use closure_rec::{ClosureRec,ClosureMutRec};
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `StableFnMut`
[INFO] [stdout]    --> src/closure_rec.rs:252:30
[INFO] [stdout]     |
[INFO] [stdout] 252 |     use stable_fn::{StableFn,StableFnMut};
[INFO] [stdout]     |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]   --> src/closure_rec.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     state: &'a mut State
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/closure_rec.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                     n => me.call_with_state((i1,i0+i1), (i-1,))
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]   --> src/closure_rec.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     state: &'a mut State
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "57d226d2e01bc66910ba5950e7e3e0aca96e46ea1e63e4d392e913535f1bc81d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57d226d2e01bc66910ba5950e7e3e0aca96e46ea1e63e4d392e913535f1bc81d", kill_on_drop: false }`
[INFO] [stdout] 57d226d2e01bc66910ba5950e7e3e0aca96e46ea1e63e4d392e913535f1bc81d