[INFO] fetching crate metrics-observer-json 0.1.1...
[INFO] checking metrics-observer-json-0.1.1 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate metrics-observer-json 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate metrics-observer-json 0.1.1 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-observer-json 0.1.1
[INFO] finished tweaking crates.io crate metrics-observer-json 0.1.1
[INFO] tweaked toml for crates.io crate metrics-observer-json 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b06fa8b47cbfe846dbade829894ea8383b49b4de206dee0670a41e5eb0df25e
[INFO] running `Command { std: "docker" "start" "-a" "2b06fa8b47cbfe846dbade829894ea8383b49b4de206dee0670a41e5eb0df25e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b06fa8b47cbfe846dbade829894ea8383b49b4de206dee0670a41e5eb0df25e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b06fa8b47cbfe846dbade829894ea8383b49b4de206dee0670a41e5eb0df25e", kill_on_drop: false }`
[INFO] [stdout] 2b06fa8b47cbfe846dbade829894ea8383b49b4de206dee0670a41e5eb0df25e
[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" "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" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 526916a395da72a52caf5e00efd0e259352302539e78b24ec1419681e32f3f54
[INFO] running `Command { std: "docker" "start" "-a" "526916a395da72a52caf5e00efd0e259352302539e78b24ec1419681e32f3f54", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking metrics-core v0.5.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking hdrhistogram v6.3.4
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking metrics-util v0.3.2
[INFO] [stderr]     Checking metrics-observer-json v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.10s
[INFO] running `Command { std: "docker" "inspect" "526916a395da72a52caf5e00efd0e259352302539e78b24ec1419681e32f3f54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "526916a395da72a52caf5e00efd0e259352302539e78b24ec1419681e32f3f54", kill_on_drop: false }`
[INFO] [stdout] 526916a395da72a52caf5e00efd0e259352302539e78b24ec1419681e32f3f54