[INFO] cloning repository https://github.com/silenceM/hello-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/silenceM/hello-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsilenceM%2Fhello-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsilenceM%2Fhello-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d7a53690187bc642aa324664ff4db95dbb5eca4
[INFO] checking silenceM/hello-rust against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsilenceM%2Fhello-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/silenceM/hello-rust on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/silenceM/hello-rust
[INFO] finished tweaking git repo https://github.com/silenceM/hello-rust
[INFO] tweaked toml for git repo https://github.com/silenceM/hello-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/silenceM/hello-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ferris-says v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a21c45a0e38b76644c27134a1076079cd0ffc62f2e2eaca9acc880b8b6e935f5
[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" "a21c45a0e38b76644c27134a1076079cd0ffc62f2e2eaca9acc880b8b6e935f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a21c45a0e38b76644c27134a1076079cd0ffc62f2e2eaca9acc880b8b6e935f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a21c45a0e38b76644c27134a1076079cd0ffc62f2e2eaca9acc880b8b6e935f5", kill_on_drop: false }`
[INFO] [stdout] a21c45a0e38b76644c27134a1076079cd0ffc62f2e2eaca9acc880b8b6e935f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b849ce9021025b33818fc941e6a26a081d9d7c451724ad33fca3f7510654ad5f
[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" "b849ce9021025b33818fc941e6a26a081d9d7c451724ad33fca3f7510654ad5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking gimli v0.21.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking object v0.19.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking smallvec v0.4.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking addr2line v0.12.1
[INFO] [stderr]     Checking backtrace v0.3.48
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking ferris-says v0.2.0
[INFO] [stderr]     Checking hello-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.89s
[INFO] running `Command { std: "docker" "inspect" "b849ce9021025b33818fc941e6a26a081d9d7c451724ad33fca3f7510654ad5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b849ce9021025b33818fc941e6a26a081d9d7c451724ad33fca3f7510654ad5f", kill_on_drop: false }`
[INFO] [stdout] b849ce9021025b33818fc941e6a26a081d9d7c451724ad33fca3f7510654ad5f