[INFO] fetching crate rmsafe 4.0.0...
[INFO] testing rmsafe-4.0.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate rmsafe 4.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rmsafe 4.0.0
[INFO] finished tweaking crates.io crate rmsafe 4.0.0
[INFO] tweaked toml for crates.io crate rmsafe 4.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rmsafe 4.0.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rmsafe 4.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc967f3c64f030ea1f16eaf3e2563fff56bd4ffb96d0dae1e269995b10e09356
[INFO] running `Command { std: "docker" "start" "-a" "cc967f3c64f030ea1f16eaf3e2563fff56bd4ffb96d0dae1e269995b10e09356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc967f3c64f030ea1f16eaf3e2563fff56bd4ffb96d0dae1e269995b10e09356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc967f3c64f030ea1f16eaf3e2563fff56bd4ffb96d0dae1e269995b10e09356", kill_on_drop: false }`
[INFO] [stdout] cc967f3c64f030ea1f16eaf3e2563fff56bd4ffb96d0dae1e269995b10e09356
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91f064b5f9daf7a28391d2128f71babb67ce6a7703acbfa01e84743bf1ee31c0
[INFO] running `Command { std: "docker" "start" "-a" "91f064b5f9daf7a28391d2128f71babb67ce6a7703acbfa01e84743bf1ee31c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rmsafe v4.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: failed to find a `codegen-backends` folder in the sysroot candidates:
[INFO] [stdout]        * /opt/rustwide/rustup-home/toolchains/562dee4820c458d823175268e41601d4c060588a
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rmsafe` (bin "rms") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "91f064b5f9daf7a28391d2128f71babb67ce6a7703acbfa01e84743bf1ee31c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f064b5f9daf7a28391d2128f71babb67ce6a7703acbfa01e84743bf1ee31c0", kill_on_drop: false }`
[INFO] [stdout] 91f064b5f9daf7a28391d2128f71babb67ce6a7703acbfa01e84743bf1ee31c0