[INFO] fetching crate merging-iterator 1.3.0...
[INFO] checking merging-iterator-1.3.0 against master#dfdbe30004a095ad63951c4cd6e10a9a971a7399 for pr-120932
[INFO] extracting crate merging-iterator 1.3.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate merging-iterator 1.3.0 on toolchain dfdbe30004a095ad63951c4cd6e10a9a971a7399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dfdbe30004a095ad63951c4cd6e10a9a971a7399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merging-iterator 1.3.0
[INFO] finished tweaking crates.io crate merging-iterator 1.3.0
[INFO] tweaked toml for crates.io crate merging-iterator 1.3.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dfdbe30004a095ad63951c4cd6e10a9a971a7399" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dfdbe30004a095ad63951c4cd6e10a9a971a7399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+dfdbe30004a095ad63951c4cd6e10a9a971a7399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aaeb1743e01c51a0fb8ffc95aa527affc1121727a66b964e8a10a14c642e19f1
[INFO] running `Command { std: "docker" "start" "-a" "aaeb1743e01c51a0fb8ffc95aa527affc1121727a66b964e8a10a14c642e19f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aaeb1743e01c51a0fb8ffc95aa527affc1121727a66b964e8a10a14c642e19f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaeb1743e01c51a0fb8ffc95aa527affc1121727a66b964e8a10a14c642e19f1", kill_on_drop: false }`
[INFO] [stdout] aaeb1743e01c51a0fb8ffc95aa527affc1121727a66b964e8a10a14c642e19f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+dfdbe30004a095ad63951c4cd6e10a9a971a7399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f46438b1d9cb28dd50a828924591d4bbf17ecd80f27c3d3b19b42cd839ee726d
[INFO] running `Command { std: "docker" "start" "-a" "f46438b1d9cb28dd50a828924591d4bbf17ecd80f27c3d3b19b42cd839ee726d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking merging-iterator v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking proptest v0.9.6
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `Command { std: "docker" "inspect" "f46438b1d9cb28dd50a828924591d4bbf17ecd80f27c3d3b19b42cd839ee726d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f46438b1d9cb28dd50a828924591d4bbf17ecd80f27c3d3b19b42cd839ee726d", kill_on_drop: false }`
[INFO] [stdout] f46438b1d9cb28dd50a828924591d4bbf17ecd80f27c3d3b19b42cd839ee726d
[INFO] checking merging-iterator-1.3.0 against master#ba824a2e25948a86596ccf7594afe548020e86e6 for pr-120932
[INFO] extracting crate merging-iterator 1.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate merging-iterator 1.3.0 on toolchain ba824a2e25948a86596ccf7594afe548020e86e6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merging-iterator 1.3.0
[INFO] finished tweaking crates.io crate merging-iterator 1.3.0
[INFO] tweaked toml for crates.io crate merging-iterator 1.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking merging-iterator-1.3.0 against master#ba824a2e25948a86596ccf7594afe548020e86e6 for pr-120932
[INFO] extracting crate merging-iterator 1.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate merging-iterator 1.3.0 on toolchain ba824a2e25948a86596ccf7594afe548020e86e6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merging-iterator 1.3.0
[INFO] finished tweaking crates.io crate merging-iterator 1.3.0
[INFO] tweaked toml for crates.io crate merging-iterator 1.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking merging-iterator-1.3.0 against master#ba824a2e25948a86596ccf7594afe548020e86e6 for pr-120932
[INFO] extracting crate merging-iterator 1.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate merging-iterator 1.3.0 on toolchain ba824a2e25948a86596ccf7594afe548020e86e6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merging-iterator 1.3.0
[INFO] finished tweaking crates.io crate merging-iterator 1.3.0
[INFO] tweaked toml for crates.io crate merging-iterator 1.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking merging-iterator-1.3.0 against master#ba824a2e25948a86596ccf7594afe548020e86e6 for pr-120932
[INFO] extracting crate merging-iterator 1.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate merging-iterator 1.3.0 on toolchain ba824a2e25948a86596ccf7594afe548020e86e6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merging-iterator 1.3.0
[INFO] finished tweaking crates.io crate merging-iterator 1.3.0
[INFO] tweaked toml for crates.io crate merging-iterator 1.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking merging-iterator-1.3.0 against master#ba824a2e25948a86596ccf7594afe548020e86e6 for pr-120932
[INFO] extracting crate merging-iterator 1.3.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate merging-iterator 1.3.0 on toolchain ba824a2e25948a86596ccf7594afe548020e86e6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate merging-iterator 1.3.0
[INFO] finished tweaking crates.io crate merging-iterator 1.3.0
[INFO] tweaked toml for crates.io crate merging-iterator 1.3.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ba824a2e25948a86596ccf7594afe548020e86e6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.