[INFO] cloning repository https://github.com/aadit0402/self-learning-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/aadit0402/self-learning-os-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadit0402%2Fself-learning-os-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadit0402%2Fself-learning-os-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d4ffc712edb1dea72b746621e5d27c3ef0d395fb
[INFO] checking aadit0402/self-learning-os-rust against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faadit0402%2Fself-learning-os-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aadit0402/self-learning-os-rust on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aadit0402/self-learning-os-rust
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/aadit0402/self-learning-os-rust
[INFO] tweaked toml for git repo https://github.com/aadit0402/self-learning-os-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/aadit0402/self-learning-os-rust 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" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31da0fcf26f3f2b953c78eca50deade8358c391bd71047c1366b6ae10522895e
[INFO] running `Command { std: "docker" "start" "-a" "31da0fcf26f3f2b953c78eca50deade8358c391bd71047c1366b6ae10522895e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31da0fcf26f3f2b953c78eca50deade8358c391bd71047c1366b6ae10522895e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31da0fcf26f3f2b953c78eca50deade8358c391bd71047c1366b6ae10522895e", kill_on_drop: false }`
[INFO] [stdout] 31da0fcf26f3f2b953c78eca50deade8358c391bd71047c1366b6ae10522895e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 884ff2cfa84320c4e2057698827ce9efa455f7e43ec8492b4741ff67fdc81d2c
[INFO] running `Command { std: "docker" "start" "-a" "884ff2cfa84320c4e2057698827ce9efa455f7e43ec8492b4741ff67fdc81d2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking volatile v0.4.6
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking bit_field v0.10.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking fixedvec v0.2.4
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/spin-0.4.10/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "884ff2cfa84320c4e2057698827ce9efa455f7e43ec8492b4741ff67fdc81d2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884ff2cfa84320c4e2057698827ce9efa455f7e43ec8492b4741ff67fdc81d2c", kill_on_drop: false }`
[INFO] [stdout] 884ff2cfa84320c4e2057698827ce9efa455f7e43ec8492b4741ff67fdc81d2c
