[INFO] cloning repository https://github.com/pcein/launchpad-quickstart
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pcein/launchpad-quickstart" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpcein%2Flaunchpad-quickstart", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpcein%2Flaunchpad-quickstart'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5631384bc048cefcfa5e1c715051c49a65146f55
[INFO] checking pcein/launchpad-quickstart against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpcein%2Flaunchpad-quickstart" "/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/pcein/launchpad-quickstart on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7/source/.cargo/config
[INFO] started tweaking git repo https://github.com/pcein/launchpad-quickstart
[INFO] finished tweaking git repo https://github.com/pcein/launchpad-quickstart
[INFO] tweaked toml for git repo https://github.com/pcein/launchpad-quickstart written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/pcein/launchpad-quickstart 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]     Blocking waiting for file lock on package cache
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3957a8ef6cff43836956a3d44c8d07afb08d0345ba948c2436acf06c4115e9a0
[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" "3957a8ef6cff43836956a3d44c8d07afb08d0345ba948c2436acf06c4115e9a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3957a8ef6cff43836956a3d44c8d07afb08d0345ba948c2436acf06c4115e9a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3957a8ef6cff43836956a3d44c8d07afb08d0345ba948c2436acf06c4115e9a0", kill_on_drop: false }`
[INFO] [stdout] 3957a8ef6cff43836956a3d44c8d07afb08d0345ba948c2436acf06c4115e9a0
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85f6bff5c47fbc91f93019e6b2901eaec36f271cfed89aa7001d8629049c58a7
[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" "85f6bff5c47fbc91f93019e6b2901eaec36f271cfed89aa7001d8629049c58a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling cortex-m v0.3.1
[INFO] [stderr]     Checking aligned v0.1.1
[INFO] [stderr]    Compiling cortex-m-rt v0.3.6
[INFO] [stderr]     Checking bare-metal v0.1.1
[INFO] [stderr]    Compiling launchpad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stdout] error[E0635]: unknown feature `const_unsafe_cell_new`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bare-metal-0.1.1/src/lib.rs:5:21
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn,const_unsafe_cell_new)]
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bare-metal`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "85f6bff5c47fbc91f93019e6b2901eaec36f271cfed89aa7001d8629049c58a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f6bff5c47fbc91f93019e6b2901eaec36f271cfed89aa7001d8629049c58a7", kill_on_drop: false }`
[INFO] [stdout] 85f6bff5c47fbc91f93019e6b2901eaec36f271cfed89aa7001d8629049c58a7