[INFO] cloning repository https://github.com/vladandrew/os_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vladandrew/os_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladandrew%2Fos_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladandrew%2Fos_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2beb9ae70dbc61efe0ef8b87f29c0c0a362f4ed5
[INFO] testing vladandrew/os_rust against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvladandrew%2Fos_rust" "/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/vladandrew/os_rust on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vladandrew/os_rust
[INFO] finished tweaking git repo https://github.com/vladandrew/os_rust
[INFO] tweaked toml for git repo https://github.com/vladandrew/os_rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/vladandrew/os_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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] 999452e43c4f1cfddef00a223950a91d1b6a00035b8ab9c9fff5b1e7a9d3886e
[INFO] running `Command { std: "docker" "start" "-a" "999452e43c4f1cfddef00a223950a91d1b6a00035b8ab9c9fff5b1e7a9d3886e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "999452e43c4f1cfddef00a223950a91d1b6a00035b8ab9c9fff5b1e7a9d3886e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999452e43c4f1cfddef00a223950a91d1b6a00035b8ab9c9fff5b1e7a9d3886e", kill_on_drop: false }`
[INFO] [stdout] 999452e43c4f1cfddef00a223950a91d1b6a00035b8ab9c9fff5b1e7a9d3886e
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "build" "--frozen" "--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] 4a4c105932183a6dca04c8cc1c670df0b525b43c031402ae7fce406519997b76
[INFO] running `Command { std: "docker" "start" "-a" "4a4c105932183a6dca04c8cc1c670df0b525b43c031402ae7fce406519997b76", kill_on_drop: false }`
[INFO] [stderr] error: "/opt/rustwide/rustup-home/toolchains/5d5ff84130da0d74c6ece368dbe821d8f83fa526/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" "4a4c105932183a6dca04c8cc1c670df0b525b43c031402ae7fce406519997b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a4c105932183a6dca04c8cc1c670df0b525b43c031402ae7fce406519997b76", kill_on_drop: false }`
[INFO] [stdout] 4a4c105932183a6dca04c8cc1c670df0b525b43c031402ae7fce406519997b76