[INFO] cloning repository https://github.com/sjeohp/rust-chain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sjeohp/rust-chain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjeohp%2Frust-chain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjeohp%2Frust-chain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11f41327188ffae4ee69e8a60d4a197d1e201581
[INFO] checking sjeohp/rust-chain against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjeohp%2Frust-chain" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjeohp/rust-chain on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sjeohp/rust-chain
[INFO] finished tweaking git repo https://github.com/sjeohp/rust-chain
[INFO] tweaked toml for git repo https://github.com/sjeohp/rust-chain written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/sjeohp/rust-chain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d223ad0d2d16d5ea712ec83560cc99e6a177bcbbe9f361b92708caea899bb8f3
[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" "d223ad0d2d16d5ea712ec83560cc99e6a177bcbbe9f361b92708caea899bb8f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d223ad0d2d16d5ea712ec83560cc99e6a177bcbbe9f361b92708caea899bb8f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d223ad0d2d16d5ea712ec83560cc99e6a177bcbbe9f361b92708caea899bb8f3", kill_on_drop: false }`
[INFO] [stdout] d223ad0d2d16d5ea712ec83560cc99e6a177bcbbe9f361b92708caea899bb8f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 403c703a9f171701298822d128eafc207e4741aeb868fae24814a7d6882b154f
[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" "403c703a9f171701298822d128eafc207e4741aeb868fae24814a7d6882b154f", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]     Checking num-traits v0.1.36
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking cfg-if v0.1.0
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking md5 v0.2.1
[INFO] [stderr]    Compiling ring v0.4.3
[INFO] [stderr]     Checking phf_shared v0.7.20
[INFO] [stderr]     Checking fallible-iterator v0.1.3
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]     Checking log v0.3.6
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking bufstream v0.1.2
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking lazy_static v0.2.1
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking untrusted v0.3.1
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking serde v0.8.20
[INFO] [stderr]     Checking phf v0.7.20
[INFO] [stderr]    Compiling nix v0.6.0
[INFO] [stdout] error[E0277]: `&&Vec<String>` is not an iterator
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ring-0.4.3/build.rs:206:19
[INFO] [stdout]     |
[INFO] [stdout] 206 |             .args(&args)
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   `&&Vec<String>` is not an iterator
[INFO] [stdout]     |                   help: consider adding dereference here: `&*args`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `Iterator` is not implemented for `&&Vec<String>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `IntoIterator` for `&&Vec<String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ring`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "403c703a9f171701298822d128eafc207e4741aeb868fae24814a7d6882b154f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "403c703a9f171701298822d128eafc207e4741aeb868fae24814a7d6882b154f", kill_on_drop: false }`
[INFO] [stdout] 403c703a9f171701298822d128eafc207e4741aeb868fae24814a7d6882b154f