[INFO] cloning repository https://github.com/rectcircle/tokio-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rectcircle/tokio-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frectcircle%2Ftokio-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frectcircle%2Ftokio-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca43faaf9420371c0358332a86b3b8992e7f939a
[INFO] checking rectcircle/tokio-learn against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frectcircle%2Ftokio-learn" "/workspace/builds/worker-47/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-47/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rectcircle/tokio-learn on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rectcircle/tokio-learn
[INFO] finished tweaking git repo https://github.com/rectcircle/tokio-learn
[INFO] tweaked toml for git repo https://github.com/rectcircle/tokio-learn written to /workspace/builds/worker-47/source/Cargo.toml
[INFO] crate git repo https://github.com/rectcircle/tokio-learn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.3.3
[INFO] [stderr]   Downloaded unicode-xid v0.2.0
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded fuchsia-zircon v0.3.3
[INFO] [stderr]   Downloaded bitflags v1.2.1
[INFO] [stderr]   Downloaded futures-macro v0.3.4
[INFO] [stderr]   Downloaded futures-io v0.3.4
[INFO] [stderr]   Downloaded futures-sink v0.3.4
[INFO] [stderr]   Downloaded pin-utils v0.1.0-alpha.4
[INFO] [stderr]   Downloaded futures-channel v0.3.4
[INFO] [stderr]   Downloaded futures-executor v0.3.4
[INFO] [stderr]   Downloaded num_cpus v1.12.0
[INFO] [stderr]   Downloaded libc v0.2.67
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded slab v0.4.2
[INFO] [stderr]   Downloaded mio-uds v0.6.7
[INFO] [stderr]   Downloaded futures v0.3.4
[INFO] [stderr]   Downloaded futures-util v0.3.4
[INFO] [stderr]   Downloaded ws2_32-sys v0.2.1
[INFO] [stderr]   Downloaded cfg-if v0.1.10
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.3
[INFO] [stderr]   Downloaded futures-task v0.3.4
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.11
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded hermit-abi v0.1.7
[INFO] [stderr]   Downloaded tokio v0.2.11
[INFO] [stderr]   Downloaded syn v1.0.15
[INFO] [stderr]   Downloaded tokio-macros v0.2.4
[INFO] [stderr]   Downloaded net2 v0.2.33
[INFO] [stderr]   Downloaded iovec v0.1.4
[INFO] [stderr]   Downloaded bytes v0.5.4
[INFO] [stderr]   Downloaded futures-core v0.3.4
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded log v0.4.8
[INFO] [stderr]   Downloaded miow v0.2.1
[INFO] [stderr]   Downloaded mio v0.6.21
[INFO] [stderr]   Downloaded proc-macro2 v1.0.8
[INFO] [stderr]   Downloaded pin-project-lite v0.1.4
[INFO] [stderr]   Downloaded quote v1.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a5c4f71a5c7bdf136853ef1c58ee26a2b755dd7bbda51cb776aad2017b84a7f
[INFO] running `Command { std: "docker" "start" "-a" "7a5c4f71a5c7bdf136853ef1c58ee26a2b755dd7bbda51cb776aad2017b84a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a5c4f71a5c7bdf136853ef1c58ee26a2b755dd7bbda51cb776aad2017b84a7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a5c4f71a5c7bdf136853ef1c58ee26a2b755dd7bbda51cb776aad2017b84a7f", kill_on_drop: false }`
[INFO] [stdout] 7a5c4f71a5c7bdf136853ef1c58ee26a2b755dd7bbda51cb776aad2017b84a7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-47/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b970c261fe7946606eb1acea63488f1439bbda738157a28957c46cdef75d0bd
[INFO] running `Command { std: "docker" "start" "-a" "6b970c261fe7946606eb1acea63488f1439bbda738157a28957c46cdef75d0bd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 06s
[INFO] running `Command { std: "docker" "inspect" "6b970c261fe7946606eb1acea63488f1439bbda738157a28957c46cdef75d0bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b970c261fe7946606eb1acea63488f1439bbda738157a28957c46cdef75d0bd", kill_on_drop: false }`
[INFO] [stdout] 6b970c261fe7946606eb1acea63488f1439bbda738157a28957c46cdef75d0bd