[INFO] cloning repository https://github.com/NikolaeVarius/rust_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NikolaeVarius/rust_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikolaeVarius%2Frust_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikolaeVarius%2Frust_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 757a8e8be584b103ea0555a772e046eb74a528b6
[INFO] checking NikolaeVarius/rust_os against try#72f88fc4e9458f89516a0b8b0868f3718aec5b47 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNikolaeVarius%2Frust_os" "/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/NikolaeVarius/rust_os on toolchain 72f88fc4e9458f89516a0b8b0868f3718aec5b47
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NikolaeVarius/rust_os
[INFO] finished tweaking git repo https://github.com/NikolaeVarius/rust_os
[INFO] tweaked toml for git repo https://github.com/NikolaeVarius/rust_os written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/NikolaeVarius/rust_os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "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 bootloader v0.9.8
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b2de0d84a90c0660219e67f8cc4e65bce16f4175254bc9ef4fd34022bdc69e1
[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" "1b2de0d84a90c0660219e67f8cc4e65bce16f4175254bc9ef4fd34022bdc69e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b2de0d84a90c0660219e67f8cc4e65bce16f4175254bc9ef4fd34022bdc69e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b2de0d84a90c0660219e67f8cc4e65bce16f4175254bc9ef4fd34022bdc69e1", kill_on_drop: false }`
[INFO] [stdout] 1b2de0d84a90c0660219e67f8cc4e65bce16f4175254bc9ef4fd34022bdc69e1
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+72f88fc4e9458f89516a0b8b0868f3718aec5b47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f33516bbbe486e68b137b8672556646b87502ceb7280ff6b75486dee096a94d7
[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" "f33516bbbe486e68b137b8672556646b87502ceb7280ff6b75486dee096a94d7", kill_on_drop: false }`
[INFO] [stderr] error: "/opt/rustwide/rustup-home/toolchains/72f88fc4e9458f89516a0b8b0868f3718aec5b47/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" "f33516bbbe486e68b137b8672556646b87502ceb7280ff6b75486dee096a94d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f33516bbbe486e68b137b8672556646b87502ceb7280ff6b75486dee096a94d7", kill_on_drop: false }`
[INFO] [stdout] f33516bbbe486e68b137b8672556646b87502ceb7280ff6b75486dee096a94d7
