[INFO] fetching crate ident 0.3.10...
[INFO] checking ident-0.3.10 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate ident 0.3.10 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ident 0.3.10 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ident 0.3.10
[INFO] finished tweaking crates.io crate ident 0.3.10
[INFO] tweaked toml for crates.io crate ident 0.3.10 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4204c22039734438ad6076be2bf1e00fc9805ecf7685e054db15f5e637240938
[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" "4204c22039734438ad6076be2bf1e00fc9805ecf7685e054db15f5e637240938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4204c22039734438ad6076be2bf1e00fc9805ecf7685e054db15f5e637240938", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4204c22039734438ad6076be2bf1e00fc9805ecf7685e054db15f5e637240938", kill_on_drop: false }`
[INFO] [stdout] 4204c22039734438ad6076be2bf1e00fc9805ecf7685e054db15f5e637240938
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c317299c1562748785d44b3199144ff50da297232b3f8152683d1dc4e84848b9
[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" "c317299c1562748785d44b3199144ff50da297232b3f8152683d1dc4e84848b9", kill_on_drop: false }`
[INFO] [stderr]     Checking ident v0.3.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `swap` is imported redundantly
[INFO] [stdout]   --> src/ident_collections.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 6  | use std::mem::swap;
[INFO] [stdout]    |     -------------- the item `swap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 59 |         use std::mem::swap;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `swap` is imported redundantly
[INFO] [stdout]   --> src/ident_collections.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 6  | use std::mem::swap;
[INFO] [stdout]    |     -------------- the item `swap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 59 |         use std::mem::swap;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "c317299c1562748785d44b3199144ff50da297232b3f8152683d1dc4e84848b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c317299c1562748785d44b3199144ff50da297232b3f8152683d1dc4e84848b9", kill_on_drop: false }`
[INFO] [stdout] c317299c1562748785d44b3199144ff50da297232b3f8152683d1dc4e84848b9