[INFO] fetching crate rc-u8-reader 2.0.14...
[INFO] checking rc-u8-reader-2.0.14 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate rc-u8-reader 2.0.14 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rc-u8-reader 2.0.14 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rc-u8-reader 2.0.14
[INFO] finished tweaking crates.io crate rc-u8-reader 2.0.14
[INFO] tweaked toml for crates.io crate rc-u8-reader 2.0.14 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c0df7478ac9e1fc7dc4ac30e264d0429d81d4d337e996d01f32ff3e32b68e4c
[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" "2c0df7478ac9e1fc7dc4ac30e264d0429d81d4d337e996d01f32ff3e32b68e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c0df7478ac9e1fc7dc4ac30e264d0429d81d4d337e996d01f32ff3e32b68e4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c0df7478ac9e1fc7dc4ac30e264d0429d81d4d337e996d01f32ff3e32b68e4c", kill_on_drop: false }`
[INFO] [stdout] 2c0df7478ac9e1fc7dc4ac30e264d0429d81d4d337e996d01f32ff3e32b68e4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c496b995e2882b96dbc560801174e72bf89a8341bf149f19587b0997b63002d
[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" "8c496b995e2882b96dbc560801174e72bf89a8341bf149f19587b0997b63002d", kill_on_drop: false }`
[INFO] [stderr]     Checking debug-helper v0.3.12
[INFO] [stderr]     Checking rc-u8-reader v2.0.14 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "8c496b995e2882b96dbc560801174e72bf89a8341bf149f19587b0997b63002d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c496b995e2882b96dbc560801174e72bf89a8341bf149f19587b0997b63002d", kill_on_drop: false }`
[INFO] [stdout] 8c496b995e2882b96dbc560801174e72bf89a8341bf149f19587b0997b63002d