[INFO] fetching crate futures-tracing 0.0.0...
[INFO] testing futures-tracing-0.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate futures-tracing 0.0.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate futures-tracing 0.0.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-tracing 0.0.0
[INFO] finished tweaking crates.io crate futures-tracing 0.0.0
[INFO] tweaked toml for crates.io crate futures-tracing 0.0.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed7435aa1b6a0cbae5c87595301618a8cd342480c06814c9e2386945d2d9eba8
[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" "ed7435aa1b6a0cbae5c87595301618a8cd342480c06814c9e2386945d2d9eba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed7435aa1b6a0cbae5c87595301618a8cd342480c06814c9e2386945d2d9eba8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed7435aa1b6a0cbae5c87595301618a8cd342480c06814c9e2386945d2d9eba8", kill_on_drop: false }`
[INFO] [stdout] ed7435aa1b6a0cbae5c87595301618a8cd342480c06814c9e2386945d2d9eba8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a5a472705f60c76a873fd81cb95acb4f9dbc9e854eb94c017779987811ef1a9
[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" "1a5a472705f60c76a873fd81cb95acb4f9dbc9e854eb94c017779987811ef1a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-tracing v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "1a5a472705f60c76a873fd81cb95acb4f9dbc9e854eb94c017779987811ef1a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a5a472705f60c76a873fd81cb95acb4f9dbc9e854eb94c017779987811ef1a9", kill_on_drop: false }`
[INFO] [stdout] 1a5a472705f60c76a873fd81cb95acb4f9dbc9e854eb94c017779987811ef1a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 267f52ce9555f64ab12ffb87d01768df7370d1f2cf3d5b939ae94c3cfaf6ce49
[INFO] running `Command { std: "docker" "start" "-a" "267f52ce9555f64ab12ffb87d01768df7370d1f2cf3d5b939ae94c3cfaf6ce49", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-tracing v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "267f52ce9555f64ab12ffb87d01768df7370d1f2cf3d5b939ae94c3cfaf6ce49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267f52ce9555f64ab12ffb87d01768df7370d1f2cf3d5b939ae94c3cfaf6ce49", kill_on_drop: false }`
[INFO] [stdout] 267f52ce9555f64ab12ffb87d01768df7370d1f2cf3d5b939ae94c3cfaf6ce49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c6bcd87f8d822fd2aa1082cd2bfb192ba3f9c81ce4ec88467c8adebbe297d73c
[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" "c6bcd87f8d822fd2aa1082cd2bfb192ba3f9c81ce4ec88467c8adebbe297d73c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/futures_tracing-0ae42ea161443c2e
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests futures-tracing
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c6bcd87f8d822fd2aa1082cd2bfb192ba3f9c81ce4ec88467c8adebbe297d73c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6bcd87f8d822fd2aa1082cd2bfb192ba3f9c81ce4ec88467c8adebbe297d73c", kill_on_drop: false }`
[INFO] [stdout] c6bcd87f8d822fd2aa1082cd2bfb192ba3f9c81ce4ec88467c8adebbe297d73c