[INFO] fetching crate mmtk 0.8.0...
[INFO] checking mmtk-0.8.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate mmtk 0.8.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate mmtk 0.8.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-39/source/rust-toolchain
[INFO] started tweaking crates.io crate mmtk 0.8.0
[INFO] finished tweaking crates.io crate mmtk 0.8.0
[INFO] tweaked toml for crates.io crate mmtk 0.8.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded array-macro v1.0.5
[INFO] [stderr]   Downloaded enum-map-derive v0.4.6
[INFO] [stderr]   Downloaded enum-map v0.6.4
[INFO] [stderr]   Downloaded atomic-traits v0.2.0
[INFO] [stderr]   Downloaded atomic v0.4.6
[INFO] [stderr]   Downloaded pfm v0.1.0-beta.1
[INFO] [stderr]   Downloaded mimalloc-sys v0.1.6
[INFO] [stderr]   Downloaded hoard-sys v0.1.1
[INFO] [stderr]   Downloaded pfm-sys v0.0.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb61609626f6134d23345b0ed7ff57c1a1d328395f541070c4ce09f1b07360a7
[INFO] running `Command { std: "docker" "start" "-a" "fb61609626f6134d23345b0ed7ff57c1a1d328395f541070c4ce09f1b07360a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb61609626f6134d23345b0ed7ff57c1a1d328395f541070c4ce09f1b07360a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb61609626f6134d23345b0ed7ff57c1a1d328395f541070c4ce09f1b07360a7", kill_on_drop: false }`
[INFO] [stdout] fb61609626f6134d23345b0ed7ff57c1a1d328395f541070c4ce09f1b07360a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3379973af8223c6dd1dbc5cbf20a47219f17487e4a36442fa4fb4764c5bf2ed8
[INFO] running `Command { std: "docker" "start" "-a" "3379973af8223c6dd1dbc5cbf20a47219f17487e4a36442fa4fb4764c5bf2ed8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking atomic v0.4.6
[INFO] [stderr]     Checking enum_derive v0.1.7
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling atomic-traits v0.2.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking enum-map v0.6.4
[INFO] [stderr]     Checking mmtk v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.60s
[INFO] running `Command { std: "docker" "inspect" "3379973af8223c6dd1dbc5cbf20a47219f17487e4a36442fa4fb4764c5bf2ed8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3379973af8223c6dd1dbc5cbf20a47219f17487e4a36442fa4fb4764c5bf2ed8", kill_on_drop: false }`
[INFO] [stdout] 3379973af8223c6dd1dbc5cbf20a47219f17487e4a36442fa4fb4764c5bf2ed8