[INFO] cloning repository https://github.com/dyxushuai/mum
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dyxushuai/mum" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyxushuai%2Fmum", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyxushuai%2Fmum'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9eb1c3fd1d1b029bd62f78f5bd51171d5126190b
[INFO] checking dyxushuai/mum against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdyxushuai%2Fmum" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dyxushuai/mum on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dyxushuai/mum
[INFO] finished tweaking git repo https://github.com/dyxushuai/mum
[INFO] tweaked toml for git repo https://github.com/dyxushuai/mum written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/dyxushuai/mum already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88806d6c3c3b6a6d98a6c62cdc59003e4543bf31e77c121827e3f71a801220dd
[INFO] running `Command { std: "docker" "start" "-a" "88806d6c3c3b6a6d98a6c62cdc59003e4543bf31e77c121827e3f71a801220dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88806d6c3c3b6a6d98a6c62cdc59003e4543bf31e77c121827e3f71a801220dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88806d6c3c3b6a6d98a6c62cdc59003e4543bf31e77c121827e3f71a801220dd", kill_on_drop: false }`
[INFO] [stdout] 88806d6c3c3b6a6d98a6c62cdc59003e4543bf31e77c121827e3f71a801220dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ceeae256a53de40316596fa664c0dcda5b6dbcf022d4c290fbdeee22cb47cfe
[INFO] running `Command { std: "docker" "start" "-a" "6ceeae256a53de40316596fa664c0dcda5b6dbcf022d4c290fbdeee22cb47cfe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]    Compiling protobuf v2.0.2
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking unicode-normalization v0.1.7
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling pkg-config v0.3.11
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling protobuf v1.7.3
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking byteorder v0.5.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking quick-error v0.2.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking spin v0.4.8
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking log v0.4.2
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:8:43
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/util.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     unsafe { asm!("pause" :::: "volatile"); }
[INFO] [stdout]   |              ----^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |              |
[INFO] [stdout]   |              help: replace with: `llvm_asm!`
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]   = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors
[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" "6ceeae256a53de40316596fa664c0dcda5b6dbcf022d4c290fbdeee22cb47cfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ceeae256a53de40316596fa664c0dcda5b6dbcf022d4c290fbdeee22cb47cfe", kill_on_drop: false }`
[INFO] [stdout] 6ceeae256a53de40316596fa664c0dcda5b6dbcf022d4c290fbdeee22cb47cfe