[INFO] fetching crate find-real-roots-of-polynomial 0.2.1...
[INFO] checking find-real-roots-of-polynomial-0.2.1 against try#e251c42c969d6f8dbaae00e1028489c3a29f8789 for pr-94081
[INFO] extracting crate find-real-roots-of-polynomial 0.2.1 into /workspace/builds/worker-72/source
[INFO] validating manifest of crates.io crate find-real-roots-of-polynomial 0.2.1 on toolchain e251c42c969d6f8dbaae00e1028489c3a29f8789
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e251c42c969d6f8dbaae00e1028489c3a29f8789" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate find-real-roots-of-polynomial 0.2.1
[INFO] finished tweaking crates.io crate find-real-roots-of-polynomial 0.2.1
[INFO] tweaked toml for crates.io crate find-real-roots-of-polynomial 0.2.1 written to /workspace/builds/worker-72/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e251c42c969d6f8dbaae00e1028489c3a29f8789" "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" "+e251c42c969d6f8dbaae00e1028489c3a29f8789" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ring-algorithm v0.4.5
[INFO] [stderr]   Downloaded num-bigint v0.4.3
[INFO] [stderr]   Downloaded az v1.2.0
[INFO] [stderr]   Downloaded rug v1.15.0
[INFO] [stderr]   Downloaded polynomial-ring v0.4.3
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+e251c42c969d6f8dbaae00e1028489c3a29f8789" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8fddd015414e528c34f65445c74352e75bda337335bd0418b10dba27b85e539
[INFO] running `Command { std: "docker" "start" "-a" "f8fddd015414e528c34f65445c74352e75bda337335bd0418b10dba27b85e539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8fddd015414e528c34f65445c74352e75bda337335bd0418b10dba27b85e539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8fddd015414e528c34f65445c74352e75bda337335bd0418b10dba27b85e539", kill_on_drop: false }`
[INFO] [stdout] f8fddd015414e528c34f65445c74352e75bda337335bd0418b10dba27b85e539
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+e251c42c969d6f8dbaae00e1028489c3a29f8789" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b0aa737eb09f8a7a1095c335829aa29320ce257237672b3c8ea8500159dbd0e
[INFO] running `Command { std: "docker" "start" "-a" "7b0aa737eb09f8a7a1095c335829aa29320ce257237672b3c8ea8500159dbd0e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.7
[INFO] [stderr]    Compiling az v1.2.0
[INFO] [stderr]    Compiling rug v1.15.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking ring-algorithm v0.4.5
[INFO] [stderr]     Checking polynomial-ring v0.4.3
[INFO] [stderr]     Checking find-real-roots-of-polynomial v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 46s
[INFO] running `Command { std: "docker" "inspect" "7b0aa737eb09f8a7a1095c335829aa29320ce257237672b3c8ea8500159dbd0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b0aa737eb09f8a7a1095c335829aa29320ce257237672b3c8ea8500159dbd0e", kill_on_drop: false }`
[INFO] [stdout] 7b0aa737eb09f8a7a1095c335829aa29320ce257237672b3c8ea8500159dbd0e