[INFO] cloning repository https://github.com/cboudereau/rust-tokio-kata
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cboudereau/rust-tokio-kata" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcboudereau%2Frust-tokio-kata", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcboudereau%2Frust-tokio-kata'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be73da5a8feb93400786ff3677aa0becec227d21
[INFO] checking cboudereau/rust-tokio-kata against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcboudereau%2Frust-tokio-kata" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cboudereau/rust-tokio-kata on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cboudereau/rust-tokio-kata
[INFO] finished tweaking git repo https://github.com/cboudereau/rust-tokio-kata
[INFO] tweaked toml for git repo https://github.com/cboudereau/rust-tokio-kata written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/cboudereau/rust-tokio-kata already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b6295e743598f358232c6dfed846f123bfc6acd3bb9fbe757492fc1e63fd72b
[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" "6b6295e743598f358232c6dfed846f123bfc6acd3bb9fbe757492fc1e63fd72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b6295e743598f358232c6dfed846f123bfc6acd3bb9fbe757492fc1e63fd72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b6295e743598f358232c6dfed846f123bfc6acd3bb9fbe757492fc1e63fd72b", kill_on_drop: false }`
[INFO] [stdout] 6b6295e743598f358232c6dfed846f123bfc6acd3bb9fbe757492fc1e63fd72b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 098d7a22dc4899ae16247953be748057071eeb5f3e45c839eb67ac1506fc9100
[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" "098d7a22dc4899ae16247953be748057071eeb5f3e45c839eb67ac1506fc9100", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking futures-sink v0.3.13
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]    Compiling anyhow v1.0.39
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex v1.4.5
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]    Compiling async-stream-impl v0.3.0
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking atoi v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking async-stream v0.3.0
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking pin-project v1.0.6
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking tracing-subscriber v0.2.17
[INFO] [stderr]     Checking tokio-stream v0.1.5
[INFO] [stderr]     Checking mini-redis v0.4.0
[INFO] [stderr]     Checking rust-tokio-kata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.96s
[INFO] running `Command { std: "docker" "inspect" "098d7a22dc4899ae16247953be748057071eeb5f3e45c839eb67ac1506fc9100", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "098d7a22dc4899ae16247953be748057071eeb5f3e45c839eb67ac1506fc9100", kill_on_drop: false }`
[INFO] [stdout] 098d7a22dc4899ae16247953be748057071eeb5f3e45c839eb67ac1506fc9100