[INFO] updating cached repository https://github.com/jackmott/persistence
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 47cfd61aa9be450b4584d4af736cc22d7dcea722
[INFO] testing jackmott/persistence against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjackmott%2Fpersistence" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jackmott/persistence on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jackmott/persistence
[INFO] finished tweaking git repo https://github.com/jackmott/persistence
[INFO] tweaked toml for git repo https://github.com/jackmott/persistence written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/jackmott/persistence already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 01ccd88e430bf1399f8243a7a943ccb2bf7729c2a51adb0690bb2769cd41d1c6
[INFO] running `"docker" "start" "-a" "01ccd88e430bf1399f8243a7a943ccb2bf7729c2a51adb0690bb2769cd41d1c6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.1.14
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling persistence v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Arc`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 49s
[INFO] running `"docker" "inspect" "01ccd88e430bf1399f8243a7a943ccb2bf7729c2a51adb0690bb2769cd41d1c6"`
[INFO] running `"docker" "rm" "-f" "01ccd88e430bf1399f8243a7a943ccb2bf7729c2a51adb0690bb2769cd41d1c6"`
[INFO] [stdout] 01ccd88e430bf1399f8243a7a943ccb2bf7729c2a51adb0690bb2769cd41d1c6
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0964d13c591fd9010c5747f4df4871c0dc926858eb5b95be59c068cfac49dad4
[INFO] running `"docker" "start" "-a" "0964d13c591fd9010c5747f4df4871c0dc926858eb5b95be59c068cfac49dad4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling persistence v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Arc`
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stderr]   |                 ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "0964d13c591fd9010c5747f4df4871c0dc926858eb5b95be59c068cfac49dad4"`
[INFO] running `"docker" "rm" "-f" "0964d13c591fd9010c5747f4df4871c0dc926858eb5b95be59c068cfac49dad4"`
[INFO] [stdout] 0964d13c591fd9010c5747f4df4871c0dc926858eb5b95be59c068cfac49dad4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] ccd4ea6d55e2cae84d900b71d3a4506d15dc5e01140c46a03e1edbd3e5c0e924
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ccd4ea6d55e2cae84d900b71d3a4506d15dc5e01140c46a03e1edbd3e5c0e924"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `Arc`
[INFO] [stdout] 
[INFO] [stderr]  --> src/main.rs:2:17
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 2 | use std::sync::{Arc, Mutex};
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]   |                 ^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/persistence-83968ac0edf54390
[INFO] running `"docker" "inspect" "ccd4ea6d55e2cae84d900b71d3a4506d15dc5e01140c46a03e1edbd3e5c0e924"`
[INFO] running `"docker" "rm" "-f" "ccd4ea6d55e2cae84d900b71d3a4506d15dc5e01140c46a03e1edbd3e5c0e924"`
[INFO] [stdout] ccd4ea6d55e2cae84d900b71d3a4506d15dc5e01140c46a03e1edbd3e5c0e924