[INFO] cloning repository https://github.com/PtNan/blog_os_learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PtNan/blog_os_learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPtNan%2Fblog_os_learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPtNan%2Fblog_os_learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfe1fef26e0c3833c74ac94f5f46e9024f2680d9
[INFO] checking PtNan/blog_os_learning against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPtNan%2Fblog_os_learning" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PtNan/blog_os_learning on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/PtNan/blog_os_learning
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/PtNan/blog_os_learning
[INFO] tweaked toml for git repo https://github.com/PtNan/blog_os_learning written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/PtNan/blog_os_learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 51ff1254502cb73804a3f8c8449e816ccbb4ba98b88e09f47915142df8e5f0b6
[INFO] running `Command { std: "docker" "start" "-a" "51ff1254502cb73804a3f8c8449e816ccbb4ba98b88e09f47915142df8e5f0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51ff1254502cb73804a3f8c8449e816ccbb4ba98b88e09f47915142df8e5f0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51ff1254502cb73804a3f8c8449e816ccbb4ba98b88e09f47915142df8e5f0b6", kill_on_drop: false }`
[INFO] [stdout] 51ff1254502cb73804a3f8c8449e816ccbb4ba98b88e09f47915142df8e5f0b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 97235dfa9a781b6d8b340920f1a16d5d75b44cfa94217cb0db98b68d892e51f2
[INFO] running `Command { std: "docker" "start" "-a" "97235dfa9a781b6d8b340920f1a16d5d75b44cfa94217cb0db98b68d892e51f2", kill_on_drop: false }`
[INFO] [stderr] error: "/opt/rustwide/rustup-home/toolchains/5e3f1b148db5bfa27fee52464ae1f5d34c49d77b/lib/rustlib/src/rust/Cargo.lock" does not exist, unable to build with the standard library, try:
[INFO] [stderr]         rustup component add rust-src
[INFO] running `Command { std: "docker" "inspect" "97235dfa9a781b6d8b340920f1a16d5d75b44cfa94217cb0db98b68d892e51f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97235dfa9a781b6d8b340920f1a16d5d75b44cfa94217cb0db98b68d892e51f2", kill_on_drop: false }`
[INFO] [stdout] 97235dfa9a781b6d8b340920f1a16d5d75b44cfa94217cb0db98b68d892e51f2