[INFO] cloning repository https://github.com/hjr3/future-mpsc-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hjr3/future-mpsc-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjr3%2Ffuture-mpsc-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjr3%2Ffuture-mpsc-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88217f15cff0e029900e5d8820b55a8c5d7e4666
[INFO] checking hjr3/future-mpsc-example against try#d809384186eaa72b56b7b956dcf0837de4a00262 for pr-114740
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjr3%2Ffuture-mpsc-example" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hjr3/future-mpsc-example on toolchain d809384186eaa72b56b7b956dcf0837de4a00262
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d809384186eaa72b56b7b956dcf0837de4a00262" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hjr3/future-mpsc-example
[INFO] finished tweaking git repo https://github.com/hjr3/future-mpsc-example
[INFO] tweaked toml for git repo https://github.com/hjr3/future-mpsc-example written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hjr3/future-mpsc-example 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" "+d809384186eaa72b56b7b956dcf0837de4a00262" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+d809384186eaa72b56b7b956dcf0837de4a00262" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b2d5d37f6417b19029a3434f5c58f7167c88fb028d18bbff13faf2b697d43b9
[INFO] running `Command { std: "docker" "start" "-a" "0b2d5d37f6417b19029a3434f5c58f7167c88fb028d18bbff13faf2b697d43b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b2d5d37f6417b19029a3434f5c58f7167c88fb028d18bbff13faf2b697d43b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b2d5d37f6417b19029a3434f5c58f7167c88fb028d18bbff13faf2b697d43b9", kill_on_drop: false }`
[INFO] [stdout] 0b2d5d37f6417b19029a3434f5c58f7167c88fb028d18bbff13faf2b697d43b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:84cb280c7acaf12c1f874411053406050a24f846e52f817d4d9e64bcbe5ce959" "/opt/rustwide/cargo-home/bin/cargo" "+d809384186eaa72b56b7b956dcf0837de4a00262" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5619102985eb79a04dbb1230ce56de34e79791733656e7db25b9918b73f8aad5
[INFO] running `Command { std: "docker" "start" "-a" "5619102985eb79a04dbb1230ce56de34e79791733656e7db25b9918b73f8aad5", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking futures v0.1.10
[INFO] [stderr] thread 'rustc' panicked at compiler/rustc_metadata/src/rmeta/encoder.rs:442:9:
[INFO] [stderr] error: could not compile `libc` (lib)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] thread 'rustc' panicked at compiler/rustc_metadata/src/rmeta/encoder.rs:442:9:
[INFO] [stderr] thread 'rustc' panicked at compiler/rustc_metadata/src/rmeta/encoder.rs:442:9:
[INFO] [stderr] error: could not compile `regex-syntax` (lib)
[INFO] [stderr] error: could not compile `futures` (lib)
[INFO] running `Command { std: "docker" "inspect" "5619102985eb79a04dbb1230ce56de34e79791733656e7db25b9918b73f8aad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5619102985eb79a04dbb1230ce56de34e79791733656e7db25b9918b73f8aad5", kill_on_drop: false }`
[INFO] [stdout] 5619102985eb79a04dbb1230ce56de34e79791733656e7db25b9918b73f8aad5