[INFO] fetching crate bench-rs 0.2.4...
[INFO] testing bench-rs-0.2.4 against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] extracting crate bench-rs 0.2.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate bench-rs 0.2.4 on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bench-rs 0.2.4
[INFO] finished tweaking crates.io crate bench-rs 0.2.4
[INFO] tweaked toml for crates.io crate bench-rs 0.2.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f1752d0716d5c7f8ccce9874e2be9ef78b3b211463b0fb09afe51755319e290
[INFO] running `Command { std: "docker" "start" "-a" "2f1752d0716d5c7f8ccce9874e2be9ef78b3b211463b0fb09afe51755319e290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f1752d0716d5c7f8ccce9874e2be9ef78b3b211463b0fb09afe51755319e290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1752d0716d5c7f8ccce9874e2be9ef78b3b211463b0fb09afe51755319e290", kill_on_drop: false }`
[INFO] [stdout] 2f1752d0716d5c7f8ccce9874e2be9ef78b3b211463b0fb09afe51755319e290
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a164e119ef963093a987764adcfe23003289e74c2fd12ed741ce2bbfc7c03a9c
[INFO] running `Command { std: "docker" "start" "-a" "a164e119ef963093a987764adcfe23003289e74c2fd12ed741ce2bbfc7c03a9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling litrs v0.2.3
[INFO] [stderr]    Compiling bunt-macros v0.2.5
[INFO] [stderr]    Compiling bunt v0.2.5
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling bencher-macro v0.1.1
[INFO] [stderr]    Compiling pin-project v0.4.28
[INFO] [stderr]    Compiling bench-rs v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.53s
[INFO] running `Command { std: "docker" "inspect" "a164e119ef963093a987764adcfe23003289e74c2fd12ed741ce2bbfc7c03a9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a164e119ef963093a987764adcfe23003289e74c2fd12ed741ce2bbfc7c03a9c", kill_on_drop: false }`
[INFO] [stdout] a164e119ef963093a987764adcfe23003289e74c2fd12ed741ce2bbfc7c03a9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffcf9caff27413a5773d39653f364f7f9f2cc10c4327d9e4b4ae5a8d6ec292ca
[INFO] running `Command { std: "docker" "start" "-a" "ffcf9caff27413a5773d39653f364f7f9f2cc10c4327d9e4b4ae5a8d6ec292ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling futures-sink v0.3.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling argh_shared v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-lock v2.4.0
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling argh_derive v0.1.5
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling async-fs v1.5.0
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling async-process v1.1.0
[INFO] [stderr]    Compiling async-net v1.6.1
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling argh v0.1.5
[INFO] [stderr]    Compiling smol v1.2.5
[INFO] [stderr]    Compiling async-std v1.9.0
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling rcnb-rs v0.1.0
[INFO] [stderr]    Compiling futures-executor v0.3.16
[INFO] [stderr]    Compiling futures v0.3.16
[INFO] [stderr]    Compiling bench-rs v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 34.76s
[INFO] running `Command { std: "docker" "inspect" "ffcf9caff27413a5773d39653f364f7f9f2cc10c4327d9e4b4ae5a8d6ec292ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffcf9caff27413a5773d39653f364f7f9f2cc10c4327d9e4b4ae5a8d6ec292ca", kill_on_drop: false }`
[INFO] [stdout] ffcf9caff27413a5773d39653f364f7f9f2cc10c4327d9e4b4ae5a8d6ec292ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 111ad3f4a6021af9a092b299a4c50cf5134488e4d0e0a165224bc0b99eecba9a
[INFO] running `Command { std: "docker" "start" "-a" "111ad3f4a6021af9a092b299a4c50cf5134488e4d0e0a165224bc0b99eecba9a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bench_rs-b9d2b809cfbc1993)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/bench.rs (/opt/rustwide/target/debug/deps/bench-cf5fc30c7097a04d)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test_rcnb_encoding ... 874,657 ns/iter (+/- 32,166,292) = 1.14 MB/s
[INFO] [stdout] 	 memory usage: 8,355 bytes/iter (+/- 24,000)
[INFO] [stdout] 	 @Total: 1000 * 1 iters
[INFO] [stdout] test test_rcnb ... ok
[INFO] [stdout] test_base64 ... 61,011 ns/iter (+/- 712,280) = 16.39 MB/s
[INFO] [stdout] 	 memory usage: 601 bytes/iter (+/- 13,125)
[INFO] [stdout] 	 @Total: 1000 * 17 iters
[INFO] [stdout] test test_base64 ... ok
[INFO] [stdout] test test_bencher ... ok
[INFO] [stdout] test_async_with_futures ... 20,831,218 ns/iter (+/- 14,601,691) = 0.00 MB/s
[INFO] [stdout] 	 memory usage: 1,470 bytes/iter (+/- 12,000)
[INFO] [stdout] 	 @Total: 100 * 1 iters
[INFO] [stdout] 	 @avg 2 polls 
[INFO] [stdout] test test_async_with_futures ... ok
[INFO] [stdout] test_async_with_async_std ... 20,838,381 ns/iter (+/- 14,562,190) = 0.00 MB/s
[INFO] [stdout] 	 memory usage: 1,566 bytes/iter (+/- 13,112)
[INFO] [stdout] 	 @Total: 100 * 1 iters
[INFO] [stdout] 	 @avg 2 polls 
[INFO] [stdout] test test_async_with_async_std ... ok
[INFO] [stdout] test_async_with_smol ... 20,955,772 ns/iter (+/- 14,564,520) = 0.00 MB/s
[INFO] [stdout] 	 memory usage: 938 bytes/iter (+/- 11,776)
[INFO] [stdout] 	 @Total: 100 * 1 iters
[INFO] [stdout] 	 @avg 2 polls 
[INFO] [stdout] test test_async_with_smol ... ok
[INFO] [stdout] test_async_with_tokio ... 21,082,114 ns/iter (+/- 14,555,700) = 0.00 MB/s
[INFO] [stdout] 	 memory usage: 3,969 bytes/iter (+/- 45,440)
[INFO] [stdout] 	 @Total: 100 * 1 iters
[INFO] [stdout] 	 @avg 2 polls 
[INFO] [stdout] test test_async_with_tokio ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.13s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bench-rs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "111ad3f4a6021af9a092b299a4c50cf5134488e4d0e0a165224bc0b99eecba9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "111ad3f4a6021af9a092b299a4c50cf5134488e4d0e0a165224bc0b99eecba9a", kill_on_drop: false }`
[INFO] [stdout] 111ad3f4a6021af9a092b299a4c50cf5134488e4d0e0a165224bc0b99eecba9a