[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 try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsjeohp%2Frust-chain" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sjeohp/rust-chain on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-14/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" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded lazycell v0.4.0
[INFO] [stderr]   Downloaded kernel32-sys v0.2.2
[INFO] [stderr]   Downloaded winapi-build v0.1.1
[INFO] [stderr]   Downloaded time v0.1.35
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded encode_unicode v0.1.3
[INFO] [stderr]   Downloaded cfg-if v0.1.0
[INFO] [stderr]   Downloaded serde v0.8.20
[INFO] [stderr]   Downloaded mio v0.6.0
[INFO] [stderr]   Downloaded bufstream v0.1.2
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded num-traits v0.1.36
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded lazy_static v0.2.1
[INFO] [stderr]   Downloaded miow v0.1.3
[INFO] [stderr]   Downloaded unicode-width v0.1.4
[INFO] [stderr]   Downloaded untrusted v0.3.1
[INFO] [stderr]   Downloaded winapi v0.2.8
[INFO] [stderr]   Downloaded log v0.3.6
[INFO] [stderr]   Downloaded nix v0.5.1
[INFO] [stderr]   Downloaded rustyline v1.0.0
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded num v0.1.36
[INFO] [stderr]   Downloaded rustc-serialize v0.3.22
[INFO] [stderr]   Downloaded phf v0.7.20
[INFO] [stderr]   Downloaded postgres-protocol v0.2.0
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] [stderr]   Downloaded void v1.0.2
[INFO] [stderr]   Downloaded ws2_32-sys v0.2.1
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded fallible-iterator v0.1.3
[INFO] [stderr]   Downloaded net2 v0.2.26
[INFO] [stderr]   Downloaded md5 v0.2.1
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded hex v0.2.0
[INFO] [stderr]   Downloaded phf_shared v0.7.20
[INFO] [stderr]   Downloaded postgres v0.13.4
[INFO] [stderr]   Downloaded ring v0.4.3
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1627bc03e8e82d4bc6bf59d7a1244290738b41c85560a209a235a7f40401877a
[INFO] running `Command { std: "docker" "start" "-a" "1627bc03e8e82d4bc6bf59d7a1244290738b41c85560a209a235a7f40401877a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1627bc03e8e82d4bc6bf59d7a1244290738b41c85560a209a235a7f40401877a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1627bc03e8e82d4bc6bf59d7a1244290738b41c85560a209a235a7f40401877a", kill_on_drop: false }`
[INFO] [stdout] 1627bc03e8e82d4bc6bf59d7a1244290738b41c85560a209a235a7f40401877a
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f2d498599bdcc8d1b159c86668ea4c07ab5ea3c882fa5cd4d0d65fd4d289164
[INFO] running `Command { std: "docker" "start" "-a" "7f2d498599bdcc8d1b159c86668ea4c07ab5ea3c882fa5cd4d0d65fd4d289164", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.16
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking fallible-iterator v0.1.3
[INFO] [stderr]     Checking md5 v0.2.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling ring v0.4.3
[INFO] [stderr]     Checking phf_shared v0.7.20
[INFO] [stderr]     Checking serde v0.8.20
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking untrusted v0.3.1
[INFO] [stderr]     Checking bufstream v0.1.2
[INFO] [stderr]     Checking lazy_static v0.2.1
[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" "7f2d498599bdcc8d1b159c86668ea4c07ab5ea3c882fa5cd4d0d65fd4d289164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f2d498599bdcc8d1b159c86668ea4c07ab5ea3c882fa5cd4d0d65fd4d289164", kill_on_drop: false }`
[INFO] [stdout] 7f2d498599bdcc8d1b159c86668ea4c07ab5ea3c882fa5cd4d0d65fd4d289164