[INFO] cloning repository https://github.com/tim-lange1/rust_book
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tim-lange1/rust_book" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftim-lange1%2Frust_book", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftim-lange1%2Frust_book'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78cb120fe15203a53933b8665b5789eee28dc009
[INFO] checking tim-lange1/rust_book against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftim-lange1%2Frust_book" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  26% (399/1514)   
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Checking out files: 100% (1514/1514), done.
[INFO] validating manifest of git repo https://github.com/tim-lange1/rust_book on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tim-lange1/rust_book
[INFO] finished tweaking git repo https://github.com/tim-lange1/rust_book
[INFO] tweaked toml for git repo https://github.com/tim-lange1/rust_book written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tim-lange1/rust_book already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 638bf5f584e36447286fc524c0aed64778e64c3101ea51f01f286ecd152ab5d3
[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" "638bf5f584e36447286fc524c0aed64778e64c3101ea51f01f286ecd152ab5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "638bf5f584e36447286fc524c0aed64778e64c3101ea51f01f286ecd152ab5d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638bf5f584e36447286fc524c0aed64778e64c3101ea51f01f286ecd152ab5d3", kill_on_drop: false }`
[INFO] [stdout] 638bf5f584e36447286fc524c0aed64778e64c3101ea51f01f286ecd152ab5d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "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] bfdc51ffcd738d5f9d22195d7ac043a827ae90ffd4918a8f549256288949bbf6
[INFO] running `Command { std: "docker" "start" "-a" "bfdc51ffcd738d5f9d22195d7ac043a827ae90ffd4918a8f549256288949bbf6", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "bfdc51ffcd738d5f9d22195d7ac043a827ae90ffd4918a8f549256288949bbf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfdc51ffcd738d5f9d22195d7ac043a827ae90ffd4918a8f549256288949bbf6", kill_on_drop: false }`
[INFO] [stdout] bfdc51ffcd738d5f9d22195d7ac043a827ae90ffd4918a8f549256288949bbf6