[INFO] cloning repository https://github.com/alexcrichton/bors2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexcrichton/bors2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Fbors2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Fbors2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be88eac218c252a5df846f5bf6ee7a2679b02a76
[INFO] checking alexcrichton/bors2 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexcrichton%2Fbors2" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexcrichton/bors2 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/alexcrichton/bors2
[INFO] removed path dependency migrate from git repo https://github.com/alexcrichton/bors2
[INFO] finished tweaking git repo https://github.com/alexcrichton/bors2
[INFO] tweaked toml for git repo https://github.com/alexcrichton/bors2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/alexcrichton/bors2 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] [stderr] warning: dependency (migrate) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (migrate) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 315be3837df1fc94bc612d430698c51bc6fc887d1ca5a7e83cbd93936d8520a2
[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" "315be3837df1fc94bc612d430698c51bc6fc887d1ca5a7e83cbd93936d8520a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "315be3837df1fc94bc612d430698c51bc6fc887d1ca5a7e83cbd93936d8520a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "315be3837df1fc94bc612d430698c51bc6fc887d1ca5a7e83cbd93936d8520a2", kill_on_drop: false }`
[INFO] [stdout] 315be3837df1fc94bc612d430698c51bc6fc887d1ca5a7e83cbd93936d8520a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad6cd874397f836cc31eb7985262d0dfaec554df016e09c3a9d8abcff42c6ffd
[INFO] running `Command { std: "docker" "start" "-a" "ad6cd874397f836cc31eb7985262d0dfaec554df016e09c3a9d8abcff42c6ffd", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (migrate) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr] error: multiple packages link to native library `curl`, but a native library can be linked only once
[INFO] [stderr] 
[INFO] [stderr] package `curl-sys v0.2.5`
[INFO] [stderr]     ... which is depended on by `curl v0.3.11`
[INFO] [stderr]     ... which is depended on by `bors2 v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] links to native library `curl`
[INFO] [stderr] 
[INFO] [stderr] package `curl-sys v0.4.39+curl-7.74.0`
[INFO] [stderr]     ... which is depended on by `curl v0.4.34`
[INFO] [stderr]     ... which is depended on by `oauth2 v2.0.0`
[INFO] [stderr]     ... which is depended on by `bors2 v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] also links to native library `curl`
[INFO] running `Command { std: "docker" "inspect" "ad6cd874397f836cc31eb7985262d0dfaec554df016e09c3a9d8abcff42c6ffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6cd874397f836cc31eb7985262d0dfaec554df016e09c3a9d8abcff42c6ffd", kill_on_drop: false }`
[INFO] [stdout] ad6cd874397f836cc31eb7985262d0dfaec554df016e09c3a9d8abcff42c6ffd