[INFO] fetching crate data_vault 0.1.5...
[INFO] checking data_vault-0.1.5 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate data_vault 0.1.5 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate data_vault 0.1.5 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate data_vault 0.1.5
[INFO] finished tweaking crates.io crate data_vault 0.1.5
[INFO] tweaked toml for crates.io crate data_vault 0.1.5 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f5cf5537f80e60136a872a538638375d4d456fd34c76ba357a4264f234a9957
[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" "2f5cf5537f80e60136a872a538638375d4d456fd34c76ba357a4264f234a9957", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f5cf5537f80e60136a872a538638375d4d456fd34c76ba357a4264f234a9957", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5cf5537f80e60136a872a538638375d4d456fd34c76ba357a4264f234a9957", kill_on_drop: false }`
[INFO] [stdout] 2f5cf5537f80e60136a872a538638375d4d456fd34c76ba357a4264f234a9957
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] f20c7c822957100d0d602fe576c742976661681f48dd1b07e5266efd5f92af1d
[INFO] running `Command { std: "docker" "start" "-a" "f20c7c822957100d0d602fe576c742976661681f48dd1b07e5266efd5f92af1d", kill_on_drop: false }`
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[INFO] [stderr]     Checking data_vault v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/data_vault_benchmark.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `criterion_store_credit_card`
[INFO] [stdout]   --> benches/data_vault_benchmark.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn criterion_store_credit_card(c: &mut Criterion) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `criterion_retrieve_credit_card`
[INFO] [stdout]   --> benches/data_vault_benchmark.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn criterion_retrieve_credit_card(c: &mut Criterion) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 09s
[INFO] running `Command { std: "docker" "inspect" "f20c7c822957100d0d602fe576c742976661681f48dd1b07e5266efd5f92af1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f20c7c822957100d0d602fe576c742976661681f48dd1b07e5266efd5f92af1d", kill_on_drop: false }`
[INFO] [stdout] f20c7c822957100d0d602fe576c742976661681f48dd1b07e5266efd5f92af1d