[INFO] fetching crate mirror_sparse_matrix 0.1.4...
[INFO] checking mirror_sparse_matrix-0.1.4 against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] extracting crate mirror_sparse_matrix 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mirror_sparse_matrix 0.1.4 on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mirror_sparse_matrix 0.1.4
[INFO] finished tweaking crates.io crate mirror_sparse_matrix 0.1.4
[INFO] tweaked toml for crates.io crate mirror_sparse_matrix 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string_utils v0.1.1
[INFO] [stderr]   Downloaded lz4 v1.23.2
[INFO] [stderr]   Downloaded permutation v0.2.5
[INFO] [stderr]   Downloaded superslice v1.0.0
[INFO] [stderr]   Downloaded lz4-sys v1.9.2
[INFO] [stderr]   Downloaded binary_vec_io v0.1.2
[INFO] [stderr]   Downloaded pretty_trace v0.3.2
[INFO] [stderr]   Downloaded stats_utils v0.1.2
[INFO] [stderr]   Downloaded io_utils v0.2.7
[INFO] [stderr]   Downloaded vector_utils v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7ee420f950dab0894be026826d0bc52f80e21d49964dc34d32d4d36748c4e33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c7ee420f950dab0894be026826d0bc52f80e21d49964dc34d32d4d36748c4e33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7ee420f950dab0894be026826d0bc52f80e21d49964dc34d32d4d36748c4e33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7ee420f950dab0894be026826d0bc52f80e21d49964dc34d32d4d36748c4e33", kill_on_drop: false }`
[INFO] [stdout] c7ee420f950dab0894be026826d0bc52f80e21d49964dc34d32d4d36748c4e33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 66c2e4b84b7df4f7b6e73890a4641719b01dcc6d28263398480b272f5ffadb7a
[INFO] running `Command { std: "docker" "start" "-a" "66c2e4b84b7df4f7b6e73890a4641719b01dcc6d28263398480b272f5ffadb7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking permutation v0.2.5
[INFO] [stderr]     Checking superslice v1.0.0
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking stats_utils v0.1.2
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking vector_utils v0.1.3
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking string_utils v0.1.1
[INFO] [stderr]     Checking flate2 v1.0.19
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking binary_vec_io v0.1.2
[INFO] [stderr]     Checking lz4 v1.23.2
[INFO] [stderr]     Checking io_utils v0.2.7
[INFO] [stderr]     Checking pretty_trace v0.3.2
[INFO] [stderr]     Checking mirror_sparse_matrix v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.51s
[INFO] running `Command { std: "docker" "inspect" "66c2e4b84b7df4f7b6e73890a4641719b01dcc6d28263398480b272f5ffadb7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66c2e4b84b7df4f7b6e73890a4641719b01dcc6d28263398480b272f5ffadb7a", kill_on_drop: false }`
[INFO] [stdout] 66c2e4b84b7df4f7b6e73890a4641719b01dcc6d28263398480b272f5ffadb7a