[INFO] cloning repository https://github.com/xudesheng/async_benchmark
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xudesheng/async_benchmark" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudesheng%2Fasync_benchmark", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudesheng%2Fasync_benchmark'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a6c373ae3186d7b38e93ee5b5a08a345b863ccc
[INFO] checking xudesheng/async_benchmark against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxudesheng%2Fasync_benchmark" "/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/xudesheng/async_benchmark on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xudesheng/async_benchmark
[INFO] finished tweaking git repo https://github.com/xudesheng/async_benchmark
[INFO] tweaked toml for git repo https://github.com/xudesheng/async_benchmark written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/xudesheng/async_benchmark already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v0.2.1
[INFO] [stderr]   Downloaded async-std v1.4.0
[INFO] [stderr]   Downloaded async-task v1.1.0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", 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] e728467d1951cd972173b7c48e54b19a87926671ffe40658194b0dd7c75689d9
[INFO] running `Command { std: "docker" "start" "-a" "e728467d1951cd972173b7c48e54b19a87926671ffe40658194b0dd7c75689d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e728467d1951cd972173b7c48e54b19a87926671ffe40658194b0dd7c75689d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e728467d1951cd972173b7c48e54b19a87926671ffe40658194b0dd7c75689d9", kill_on_drop: false }`
[INFO] [stdout] e728467d1951cd972173b7c48e54b19a87926671ffe40658194b0dd7c75689d9
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1318048721db8659b5d5f78f085c3be07e44e186da2868c6dcb8f3b29443293e
[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" "1318048721db8659b5d5f78f085c3be07e44e186da2868c6dcb8f3b29443293e", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   tokio v0.2.6: winapi
[INFO] [stderr] 
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking futures-io v0.3.1
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking once_cell v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking http v0.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking kv-log-macro v1.0.4
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking async-task v1.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking async-std v1.4.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking async_benchmark v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/test09.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test01.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test00.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test02.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test05.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test03.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test06.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test08.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test04.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/test07.rs from 2018 edition to 2021
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.56s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking async_benchmark v0.1.0 (/tmp/fixit)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.49s
[INFO] running `Command { std: "docker" "inspect" "1318048721db8659b5d5f78f085c3be07e44e186da2868c6dcb8f3b29443293e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1318048721db8659b5d5f78f085c3be07e44e186da2868c6dcb8f3b29443293e", kill_on_drop: false }`
[INFO] [stdout] 1318048721db8659b5d5f78f085c3be07e44e186da2868c6dcb8f3b29443293e