[INFO] fetching crate scell 1.0.0...
[INFO] checking scell-1.0.0 against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] extracting crate scell 1.0.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate scell 1.0.0 on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scell 1.0.0
[INFO] finished tweaking crates.io crate scell 1.0.0
[INFO] tweaked toml for crates.io crate scell 1.0.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+81275a1445c7502a974118e0c69b795ab60be991" "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] bd35bda9cf14bfefa90603babe1ffe818b1c5d9138a414b44dc48c835e1554fa
[INFO] running `Command { std: "docker" "start" "-a" "bd35bda9cf14bfefa90603babe1ffe818b1c5d9138a414b44dc48c835e1554fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd35bda9cf14bfefa90603babe1ffe818b1c5d9138a414b44dc48c835e1554fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd35bda9cf14bfefa90603babe1ffe818b1c5d9138a414b44dc48c835e1554fa", kill_on_drop: false }`
[INFO] [stdout] bd35bda9cf14bfefa90603babe1ffe818b1c5d9138a414b44dc48c835e1554fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+81275a1445c7502a974118e0c69b795ab60be991" "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] 822997e608055bd3c8cb2efec0e1f8f535d780a8a8bcbea7f9f42ee95cd51afe
[INFO] running `Command { std: "docker" "start" "-a" "822997e608055bd3c8cb2efec0e1f8f535d780a8a8bcbea7f9f42ee95cd51afe", kill_on_drop: false }`
[INFO] [stderr]     Checking scell v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/checked.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stdout]   |                           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/checked.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stdout]   |                           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Pointer`
[INFO] [stdout]   --> src/lib.rs:28:50
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stdout]    |                                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Pointer`
[INFO] [stdout]   --> src/lib.rs:28:50
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::fmt::{Formatter, Display, Debug, Error, Pointer};
[INFO] [stdout]    |                                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "822997e608055bd3c8cb2efec0e1f8f535d780a8a8bcbea7f9f42ee95cd51afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "822997e608055bd3c8cb2efec0e1f8f535d780a8a8bcbea7f9f42ee95cd51afe", kill_on_drop: false }`
[INFO] [stdout] 822997e608055bd3c8cb2efec0e1f8f535d780a8a8bcbea7f9f42ee95cd51afe