[INFO] fetching crate iterative_methods 0.2.1...
[INFO] checking iterative_methods-0.2.1 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate iterative_methods 0.2.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate iterative_methods 0.2.1 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iterative_methods 0.2.1
[INFO] finished tweaking crates.io crate iterative_methods 0.2.1
[INFO] tweaked toml for crates.io crate iterative_methods 0.2.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate iterative_methods 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "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 rand_distr v0.4.0
[INFO] [stderr]   Downloaded rand_distr v0.2.2
[INFO] [stderr]   Downloaded alga v0.9.3
[INFO] [stderr]   Downloaded matrixmultiply v0.2.4
[INFO] [stderr]   Downloaded libm v0.2.1
[INFO] [stderr]   Downloaded ndarray v0.13.1
[INFO] [stderr]   Downloaded eigenvalues v0.3.1
[INFO] [stderr]   Downloaded nalgebra v0.19.0
[INFO] [stderr]   Downloaded rand_pcg v0.3.0
[INFO] [stderr]   Downloaded quickcheck v1.0.1
[INFO] [stderr]   Downloaded libc v0.2.95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ab1190945fdc28722f1a32ac5a851f46216473fe66f8e58d5e24c2f96dabb40
[INFO] running `Command { std: "docker" "start" "-a" "2ab1190945fdc28722f1a32ac5a851f46216473fe66f8e58d5e24c2f96dabb40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ab1190945fdc28722f1a32ac5a851f46216473fe66f8e58d5e24c2f96dabb40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab1190945fdc28722f1a32ac5a851f46216473fe66f8e58d5e24c2f96dabb40", kill_on_drop: false }`
[INFO] [stdout] 2ab1190945fdc28722f1a32ac5a851f46216473fe66f8e58d5e24c2f96dabb40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea5bb7754e7de1a78625042f62336a2316b0f1e56104436c7709ed2e04708226
[INFO] running `Command { std: "docker" "start" "-a" "ea5bb7754e7de1a78625042f62336a2316b0f1e56104436c7709ed2e04708226", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking streaming-iterator v0.1.5
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand_pcg v0.3.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking generic-array v0.13.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking rand_distr v0.4.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking quickcheck v1.0.1
[INFO] [stderr]     Checking nalgebra v0.19.0
[INFO] [stderr]     Checking eigenvalues v0.3.1
[INFO] [stderr]     Checking iterative_methods v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.79s
[INFO] running `Command { std: "docker" "inspect" "ea5bb7754e7de1a78625042f62336a2316b0f1e56104436c7709ed2e04708226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea5bb7754e7de1a78625042f62336a2316b0f1e56104436c7709ed2e04708226", kill_on_drop: false }`
[INFO] [stdout] ea5bb7754e7de1a78625042f62336a2316b0f1e56104436c7709ed2e04708226