[INFO] fetching crate mjb_gc_derive 0.2.0...
[INFO] checking mjb_gc_derive-0.2.0 against master#8a65ee08296b36342bf7c3cdc15312ccbc357227 for pr-142704
[INFO] extracting crate mjb_gc_derive 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate mjb_gc_derive 0.2.0 on toolchain 8a65ee08296b36342bf7c3cdc15312ccbc357227
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mjb_gc_derive 0.2.0
[INFO] finished tweaking crates.io crate mjb_gc_derive 0.2.0
[INFO] tweaked toml for crates.io crate mjb_gc_derive 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.13.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "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-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eceea08e4e3097ca7fad5809fc10dc6d188ac02caabc6f5a782936737a46aaf3
[INFO] running `Command { std: "docker" "start" "-a" "eceea08e4e3097ca7fad5809fc10dc6d188ac02caabc6f5a782936737a46aaf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eceea08e4e3097ca7fad5809fc10dc6d188ac02caabc6f5a782936737a46aaf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eceea08e4e3097ca7fad5809fc10dc6d188ac02caabc6f5a782936737a46aaf3", kill_on_drop: false }`
[INFO] [stdout] eceea08e4e3097ca7fad5809fc10dc6d188ac02caabc6f5a782936737a46aaf3
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a65ee08296b36342bf7c3cdc15312ccbc357227" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bd6a4f20a43d2b0e024a2fd733559f6d0ad4edf73d7d15ba65df2a41e22fd8a
[INFO] running `Command { std: "docker" "start" "-a" "2bd6a4f20a43d2b0e024a2fd733559f6d0ad4edf73d7d15ba65df2a41e22fd8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-xid v0.2.6
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking synstructure v0.12.6
[INFO] [stderr]     Checking mjb_gc_derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.31s
[INFO] running `Command { std: "docker" "inspect" "2bd6a4f20a43d2b0e024a2fd733559f6d0ad4edf73d7d15ba65df2a41e22fd8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd6a4f20a43d2b0e024a2fd733559f6d0ad4edf73d7d15ba65df2a41e22fd8a", kill_on_drop: false }`
[INFO] [stdout] 2bd6a4f20a43d2b0e024a2fd733559f6d0ad4edf73d7d15ba65df2a41e22fd8a