[INFO] fetching crate rental-impl 0.5.5...
[INFO] checking rental-impl-0.5.5 against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] extracting crate rental-impl 0.5.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rental-impl 0.5.5 on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rental-impl 0.5.5
[INFO] finished tweaking crates.io crate rental-impl 0.5.5
[INFO] tweaked toml for crates.io crate rental-impl 0.5.5 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3343fde92ee3a90a06a7a9675e9226c9ee314994a5ca57db3713aa5df1c3471b
[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" "3343fde92ee3a90a06a7a9675e9226c9ee314994a5ca57db3713aa5df1c3471b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3343fde92ee3a90a06a7a9675e9226c9ee314994a5ca57db3713aa5df1c3471b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3343fde92ee3a90a06a7a9675e9226c9ee314994a5ca57db3713aa5df1c3471b", kill_on_drop: false }`
[INFO] [stdout] 3343fde92ee3a90a06a7a9675e9226c9ee314994a5ca57db3713aa5df1c3471b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ff2524b06bfde0b78a294f89d1755bcd851265417a96df727e6b2ed6d752621
[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" "7ff2524b06bfde0b78a294f89d1755bcd851265417a96df727e6b2ed6d752621", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v1.0.58
[INFO] [stderr]     Checking rental-impl v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1428:106
[INFO] [stdout]      |
[INFO] [stdout] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stdout]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1428:106
[INFO] [stdout]      |
[INFO] [stdout] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stdout]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.79s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7ff2524b06bfde0b78a294f89d1755bcd851265417a96df727e6b2ed6d752621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ff2524b06bfde0b78a294f89d1755bcd851265417a96df727e6b2ed6d752621", kill_on_drop: false }`
[INFO] [stdout] 7ff2524b06bfde0b78a294f89d1755bcd851265417a96df727e6b2ed6d752621