[INFO] fetching crate xiaotian_s_minigrep 0.1.4...
[INFO] checking xiaotian_s_minigrep-0.1.4 against master#db870ea71b6dcc7a91b999420b88f41d3cdd13e1 for pr-75192
[INFO] extracting crate xiaotian_s_minigrep 0.1.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate xiaotian_s_minigrep 0.1.4 on toolchain db870ea71b6dcc7a91b999420b88f41d3cdd13e1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xiaotian_s_minigrep 0.1.4
[INFO] finished tweaking crates.io crate xiaotian_s_minigrep 0.1.4
[INFO] tweaked toml for crates.io crate xiaotian_s_minigrep 0.1.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate xiaotian_s_minigrep 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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] 213c6280eaf3845cd0e5e3de7e7f051935bb971ef4c5fc892f9befdf30c242cc
[INFO] running `Command { std: "docker" "start" "-a" "213c6280eaf3845cd0e5e3de7e7f051935bb971ef4c5fc892f9befdf30c242cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "213c6280eaf3845cd0e5e3de7e7f051935bb971ef4c5fc892f9befdf30c242cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "213c6280eaf3845cd0e5e3de7e7f051935bb971ef4c5fc892f9befdf30c242cc", kill_on_drop: false }`
[INFO] [stdout] 213c6280eaf3845cd0e5e3de7e7f051935bb971ef4c5fc892f9befdf30c242cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+db870ea71b6dcc7a91b999420b88f41d3cdd13e1" "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] 5184bba04852ffd5ce47b974c40cd7f8aa4cf1ce60431c810fe6d856572ac913
[INFO] running `Command { std: "docker" "start" "-a" "5184bba04852ffd5ce47b974c40cd7f8aa4cf1ce60431c810fe6d856572ac913", kill_on_drop: false }`
[INFO] [stderr]     Checking xiaotian_s_minigrep v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]    --> src/lib.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |     use std::time::Instant;
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "5184bba04852ffd5ce47b974c40cd7f8aa4cf1ce60431c810fe6d856572ac913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5184bba04852ffd5ce47b974c40cd7f8aa4cf1ce60431c810fe6d856572ac913", kill_on_drop: false }`
[INFO] [stdout] 5184bba04852ffd5ce47b974c40cd7f8aa4cf1ce60431c810fe6d856572ac913