[INFO] cloning repository https://github.com/wezm/rust-intro-talk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wezm/rust-intro-talk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 978872c31d714aa413ee86a7c6b5ccdbc8966caa
[INFO] checking wezm/rust-intro-talk against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwezm%2Frust-intro-talk" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wezm/rust-intro-talk on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wezm/rust-intro-talk
[INFO] finished tweaking git repo https://github.com/wezm/rust-intro-talk
[INFO] tweaked toml for git repo https://github.com/wezm/rust-intro-talk written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/wezm/rust-intro-talk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", 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] 372bff4a12ab88e09f41786cfafb7459c6267200bcc3a522759c6af525f810d1
[INFO] running `Command { std: "docker" "start" "-a" "372bff4a12ab88e09f41786cfafb7459c6267200bcc3a522759c6af525f810d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "372bff4a12ab88e09f41786cfafb7459c6267200bcc3a522759c6af525f810d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "372bff4a12ab88e09f41786cfafb7459c6267200bcc3a522759c6af525f810d1", kill_on_drop: false }`
[INFO] [stdout] 372bff4a12ab88e09f41786cfafb7459c6267200bcc3a522759c6af525f810d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a34d885dc6b6fbac2b3381f02f99e46dab06b1497ef199c8b471d9a2fc847746
[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" "a34d885dc6b6fbac2b3381f02f99e46dab06b1497ef199c8b471d9a2fc847746", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling libc v0.2.35
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling bytecount v0.2.0
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling semver v0.8.0
[INFO] [stderr]     Checking rand v0.3.19
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling pulldown-cmark v0.1.0
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking cargo_metadata v0.3.3
[INFO] [stderr]     Checking skeptic v0.13.2
[INFO] [stderr]    Compiling demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.70s
[INFO] running `Command { std: "docker" "inspect" "a34d885dc6b6fbac2b3381f02f99e46dab06b1497ef199c8b471d9a2fc847746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a34d885dc6b6fbac2b3381f02f99e46dab06b1497ef199c8b471d9a2fc847746", kill_on_drop: false }`
[INFO] [stdout] a34d885dc6b6fbac2b3381f02f99e46dab06b1497ef199c8b471d9a2fc847746