[INFO] fetching crate iter_from_fn 1.0.0...
[INFO] testing iter_from_fn-1.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate iter_from_fn 1.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate iter_from_fn 1.0.0 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 iter_from_fn 1.0.0
[INFO] finished tweaking crates.io crate iter_from_fn 1.0.0
[INFO] tweaked toml for crates.io crate iter_from_fn 1.0.0 written to /workspace/builds/worker-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] ba79543b99b07f42e025f318c20d44ace62e0b9c120f4431b47fe1dad3d37dbe
[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" "ba79543b99b07f42e025f318c20d44ace62e0b9c120f4431b47fe1dad3d37dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba79543b99b07f42e025f318c20d44ace62e0b9c120f4431b47fe1dad3d37dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba79543b99b07f42e025f318c20d44ace62e0b9c120f4431b47fe1dad3d37dbe", kill_on_drop: false }`
[INFO] [stdout] ba79543b99b07f42e025f318c20d44ace62e0b9c120f4431b47fe1dad3d37dbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 5d90ea7291ef3e253a1c2e8d36772f5abe935e146a234d7ffa73f1c638214d19
[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" "5d90ea7291ef3e253a1c2e8d36772f5abe935e146a234d7ffa73f1c638214d19", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter_from_fn v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "5d90ea7291ef3e253a1c2e8d36772f5abe935e146a234d7ffa73f1c638214d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d90ea7291ef3e253a1c2e8d36772f5abe935e146a234d7ffa73f1c638214d19", kill_on_drop: false }`
[INFO] [stdout] 5d90ea7291ef3e253a1c2e8d36772f5abe935e146a234d7ffa73f1c638214d19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 4b14bc720de8fb5f0f5b2da01530080fa73ee6362f88d8e1d8e98311064d951d
[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" "4b14bc720de8fb5f0f5b2da01530080fa73ee6362f88d8e1d8e98311064d951d", kill_on_drop: false }`
[INFO] [stderr]    Compiling iter_from_fn v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "4b14bc720de8fb5f0f5b2da01530080fa73ee6362f88d8e1d8e98311064d951d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b14bc720de8fb5f0f5b2da01530080fa73ee6362f88d8e1d8e98311064d951d", kill_on_drop: false }`
[INFO] [stdout] 4b14bc720de8fb5f0f5b2da01530080fa73ee6362f88d8e1d8e98311064d951d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] baff920a3eee99bca45f94a140a7b4633abaca1b0c26717c5a0e703abc7142a4
[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" "baff920a3eee99bca45f94a140a7b4633abaca1b0c26717c5a0e703abc7142a4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iter_from_fn-da68cbbb7710c947
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::test_mutable ... ok
[INFO] [stdout] test tests::test_ones ... ok
[INFO] [stderr]    Doc-tests iter_from_fn
[INFO] [stdout] test tests::test_inside_for ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "baff920a3eee99bca45f94a140a7b4633abaca1b0c26717c5a0e703abc7142a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baff920a3eee99bca45f94a140a7b4633abaca1b0c26717c5a0e703abc7142a4", kill_on_drop: false }`
[INFO] [stdout] baff920a3eee99bca45f94a140a7b4633abaca1b0c26717c5a0e703abc7142a4