[INFO] fetching crate snapshot 0.1.0...
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] crate snapshot 0.1.0 is already in cache
[INFO] checking snapshot-0.1.0 against master#ea6ab1bd845790fb31ba790d2c7aec898f89fe62 for pr-99880
[INFO] extracting crate snapshot 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate snapshot 0.1.0 on toolchain ea6ab1bd845790fb31ba790d2c7aec898f89fe62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/rust-toolchain
[INFO] started tweaking crates.io crate snapshot 0.1.0
[INFO] finished tweaking crates.io crate snapshot 0.1.0
[INFO] tweaked toml for crates.io crate snapshot 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded difference v1.0.0
[INFO] [stderr]   Downloaded snapshot-proc-macro v0.1.0
[INFO] [stderr]   Downloaded pretty_assertions v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76efa39856d9b02582859cdb6fa612ad4680a192ce2cbb2d62fb4813fa049040
[INFO] running `Command { std: "docker" "start" "-a" "76efa39856d9b02582859cdb6fa612ad4680a192ce2cbb2d62fb4813fa049040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76efa39856d9b02582859cdb6fa612ad4680a192ce2cbb2d62fb4813fa049040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76efa39856d9b02582859cdb6fa612ad4680a192ce2cbb2d62fb4813fa049040", kill_on_drop: false }`
[INFO] [stdout] 76efa39856d9b02582859cdb6fa612ad4680a192ce2cbb2d62fb4813fa049040
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+ea6ab1bd845790fb31ba790d2c7aec898f89fe62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 592608fd67433cbf62bba141dd9d729d0403ed295dfc883cf5d49621778caff4
[INFO] running `Command { std: "docker" "start" "-a" "592608fd67433cbf62bba141dd9d729d0403ed295dfc883cf5d49621778caff4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.142
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking difference v1.0.0
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking pretty_assertions v0.2.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling snapshot-proc-macro v0.1.0
[INFO] [stderr]     Checking snapshot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.96s
[INFO] running `Command { std: "docker" "inspect" "592608fd67433cbf62bba141dd9d729d0403ed295dfc883cf5d49621778caff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592608fd67433cbf62bba141dd9d729d0403ed295dfc883cf5d49621778caff4", kill_on_drop: false }`
[INFO] [stdout] 592608fd67433cbf62bba141dd9d729d0403ed295dfc883cf5d49621778caff4