[INFO] cloning repository https://github.com/vbe0201/Mirage
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vbe0201/Mirage" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvbe0201%2FMirage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvbe0201%2FMirage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d623268cfe1b8fb760f81144c2560e3554073e4
[INFO] checking vbe0201/Mirage against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvbe0201%2FMirage" "/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/vbe0201/Mirage on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/vbe0201/Mirage
[INFO] finished tweaking git repo https://github.com/vbe0201/Mirage
[INFO] tweaked toml for git repo https://github.com/vbe0201/Mirage written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/vbe0201/Mirage already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 012f84f19aa91a171f8db96046dc3d1ca94f489e4e289cd034b5becc16b7bb8d
[INFO] running `Command { std: "docker" "start" "-a" "012f84f19aa91a171f8db96046dc3d1ca94f489e4e289cd034b5becc16b7bb8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "012f84f19aa91a171f8db96046dc3d1ca94f489e4e289cd034b5becc16b7bb8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "012f84f19aa91a171f8db96046dc3d1ca94f489e4e289cd034b5becc16b7bb8d", kill_on_drop: false }`
[INFO] [stdout] 012f84f19aa91a171f8db96046dc3d1ca94f489e4e289cd034b5becc16b7bb8d
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ec597ca1ab886973ea545e22ef0fac8949823ae3f8665926ba2c7237cfcfa9b
[INFO] running `Command { std: "docker" "start" "-a" "2ec597ca1ab886973ea545e22ef0fac8949823ae3f8665926ba2c7237cfcfa9b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking enum_primitive v0.1.1 (https://github.com/roblabla/enum_primitive-rs.git#e2344b98)
[INFO] [stderr]     Checking mirage-mmio v1.0.0 (/opt/rustwide/workdir/mmio)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> mmio/src/lib.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | #![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] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> mmio/src/lib.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | #![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] [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 `mirage-mmio` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "2ec597ca1ab886973ea545e22ef0fac8949823ae3f8665926ba2c7237cfcfa9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ec597ca1ab886973ea545e22ef0fac8949823ae3f8665926ba2c7237cfcfa9b", kill_on_drop: false }`
[INFO] [stdout] 2ec597ca1ab886973ea545e22ef0fac8949823ae3f8665926ba2c7237cfcfa9b