[INFO] cloning repository https://github.com/ConnorBP/benchme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ConnorBP/benchme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConnorBP%2Fbenchme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConnorBP%2Fbenchme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8e43ba6ba7b146cf1412d794a71837fd24ffee9
[INFO] checking ConnorBP/benchme against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FConnorBP%2Fbenchme" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ConnorBP/benchme on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ConnorBP/benchme
[INFO] finished tweaking git repo https://github.com/ConnorBP/benchme
[INFO] tweaked toml for git repo https://github.com/ConnorBP/benchme written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ConnorBP/benchme already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-3/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52ce576f2b1942254bc1b1c5b1578a73b8189a2f3bfa91168fec72c6001304d2
[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" "52ce576f2b1942254bc1b1c5b1578a73b8189a2f3bfa91168fec72c6001304d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52ce576f2b1942254bc1b1c5b1578a73b8189a2f3bfa91168fec72c6001304d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52ce576f2b1942254bc1b1c5b1578a73b8189a2f3bfa91168fec72c6001304d2", kill_on_drop: false }`
[INFO] [stdout] 52ce576f2b1942254bc1b1c5b1578a73b8189a2f3bfa91168fec72c6001304d2
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90c6bd88f6ed36b6aa3961bd093295fe0ec9a4c24a187ca98688fb96e889de91
[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" "90c6bd88f6ed36b6aa3961bd093295fe0ec9a4c24a187ca98688fb96e889de91", kill_on_drop: false }`
[INFO] [stderr]     Checking benchme v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]   --> src/lib.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     use std::time::{Instant, Duration};
[INFO] [stdout]    |                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/lib.rs:20:21
[INFO] [stdout]    |
[INFO] [stdout] 20 |               $($lines;)*
[INFO] [stdout]    |                       ^ help: remove this semicolon
[INFO] [stdout] ...
[INFO] [stdout] 61 | /         benchmarknamed! {
[INFO] [stdout] 62 | |             #[IhaveAname]
[INFO] [stdout] 63 | |             for x in 0..10 {
[INFO] [stdout] 64 | |                 let y = x * 2;
[INFO] [stdout] 65 | |             };
[INFO] [stdout] 66 | |         }
[INFO] [stdout]    | |_________- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/lib.rs:64:21
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 let y = x * 2;
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "90c6bd88f6ed36b6aa3961bd093295fe0ec9a4c24a187ca98688fb96e889de91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c6bd88f6ed36b6aa3961bd093295fe0ec9a4c24a187ca98688fb96e889de91", kill_on_drop: false }`
[INFO] [stdout] 90c6bd88f6ed36b6aa3961bd093295fe0ec9a4c24a187ca98688fb96e889de91