[INFO] cloning repository https://github.com/prajithkb/perf_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/prajithkb/perf_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajithkb%2Fperf_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajithkb%2Fperf_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5c3e12db8dce0c4382c80ee998e174f3f799bd7
[INFO] checking prajithkb/perf_test against master#e29821ff85a2a3000d226f99f62f89464028d5d6 for pr-111505
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprajithkb%2Fperf_test" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/prajithkb/perf_test on toolchain e29821ff85a2a3000d226f99f62f89464028d5d6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/prajithkb/perf_test
[INFO] finished tweaking git repo https://github.com/prajithkb/perf_test
[INFO] tweaked toml for git repo https://github.com/prajithkb/perf_test written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/prajithkb/perf_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cast v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 849d120ddbf3da943284e5886de7ddd537d12233ec10b89b6964224f2bde38de
[INFO] running `Command { std: "docker" "start" "-a" "849d120ddbf3da943284e5886de7ddd537d12233ec10b89b6964224f2bde38de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "849d120ddbf3da943284e5886de7ddd537d12233ec10b89b6964224f2bde38de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849d120ddbf3da943284e5886de7ddd537d12233ec10b89b6964224f2bde38de", kill_on_drop: false }`
[INFO] [stdout] 849d120ddbf3da943284e5886de7ddd537d12233ec10b89b6964224f2bde38de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e29821ff85a2a3000d226f99f62f89464028d5d6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66665a128f92075fe854420e544c1e22c32fe2020ceb0fe538eef275063b3e3e
[INFO] running `Command { std: "docker" "start" "-a" "66665a128f92075fe854420e544c1e22c32fe2020ceb0fe538eef275063b3e3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]    Compiling cast v0.2.5
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking perf_test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tps`
[INFO] [stdout]  --> src/load_test_thread.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub async fn load_test(tps: usize, threads: usize) {}
[INFO] [stdout]   |                        ^^^ help: if this is intentional, prefix it with an underscore: `_tps`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `threads`
[INFO] [stdout]  --> src/load_test_thread.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub async fn load_test(tps: usize, threads: usize) {}
[INFO] [stdout]   |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tps`
[INFO] [stdout]  --> src/load_test_thread.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub async fn load_test(tps: usize, threads: usize) {}
[INFO] [stdout]   |                        ^^^ help: if this is intentional, prefix it with an underscore: `_tps`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `threads`
[INFO] [stdout]  --> src/load_test_thread.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub async fn load_test(tps: usize, threads: usize) {}
[INFO] [stdout]   |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_threads`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.10s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "66665a128f92075fe854420e544c1e22c32fe2020ceb0fe538eef275063b3e3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66665a128f92075fe854420e544c1e22c32fe2020ceb0fe538eef275063b3e3e", kill_on_drop: false }`
[INFO] [stdout] 66665a128f92075fe854420e544c1e22c32fe2020ceb0fe538eef275063b3e3e