[INFO] fetching crate find-real-roots-of-polynomial 0.2.3...
[INFO] checking find-real-roots-of-polynomial-0.2.3 against master#23718020b12d7e5a54f82a19910e8356ee719667 for pr-146013-1
[INFO] extracting crate find-real-roots-of-polynomial 0.2.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate find-real-roots-of-polynomial 0.2.3
[INFO] finished tweaking crates.io crate find-real-roots-of-polynomial 0.2.3
[INFO] tweaked toml for crates.io crate find-real-roots-of-polynomial 0.2.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate find-real-roots-of-polynomial 0.2.3 on toolchain 23718020b12d7e5a54f82a19910e8356ee719667
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "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_core v0.6.4
[INFO] [stderr]   Downloaded take_mut v0.2.2
[INFO] [stderr]   Downloaded strum v0.24.1
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.21
[INFO] [stderr]   Downloaded polynomial-ring v0.5.1
[INFO] [stderr]   Downloaded num v0.4.3
[INFO] [stderr]   Downloaded heck v0.4.1
[INFO] [stderr]   Downloaded num-iter v0.1.45
[INFO] [stderr]   Downloaded num-rational v0.4.2
[INFO] [stderr]   Downloaded ring-algorithm v0.8.0
[INFO] [stderr]   Downloaded rand_chacha v0.3.1
[INFO] [stderr]   Downloaded derive-syn-parse v0.1.5
[INFO] [stderr]   Downloaded strum_macros v0.24.3
[INFO] [stderr]   Downloaded num-complex v0.4.6
[INFO] [stderr]   Downloaded auto-impl-ops v0.2.1
[INFO] [stderr]   Downloaded num-traits v0.2.19
[INFO] [stderr]   Downloaded num-integer v0.1.46
[INFO] [stderr]   Downloaded autocfg v1.5.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.27
[INFO] [stderr]   Downloaded num-bigint v0.4.6
[INFO] [stderr]   Downloaded rand v0.8.5
[INFO] [stderr]   Downloaded zerocopy v0.8.27
[INFO] [stderr]   Downloaded syn v1.0.109
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef52b240251e13d776b1ef7e28b27391d9855aac91c05f83c4e37d0ee473f683
[INFO] running `Command { std: "docker" "start" "-a" "ef52b240251e13d776b1ef7e28b27391d9855aac91c05f83c4e37d0ee473f683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef52b240251e13d776b1ef7e28b27391d9855aac91c05f83c4e37d0ee473f683", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef52b240251e13d776b1ef7e28b27391d9855aac91c05f83c4e37d0ee473f683", kill_on_drop: false }`
[INFO] [stdout] ef52b240251e13d776b1ef7e28b27391d9855aac91c05f83c4e37d0ee473f683
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a0a19651fb285120b3378285f801d2f98acb30e05874e768a86608e7a48566f
[INFO] running `Command { std: "docker" "start" "-a" "7a0a19651fb285120b3378285f801d2f98acb30e05874e768a86608e7a48566f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking ring-algorithm v0.8.0
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling derive-syn-parse v0.1.5
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling auto-impl-ops v0.2.1
[INFO] [stderr]     Checking polynomial-ring v0.5.1
[INFO] [stderr]     Checking find-real-roots-of-polynomial v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.28s
[INFO] running `Command { std: "docker" "inspect" "7a0a19651fb285120b3378285f801d2f98acb30e05874e768a86608e7a48566f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a0a19651fb285120b3378285f801d2f98acb30e05874e768a86608e7a48566f", kill_on_drop: false }`
[INFO] [stdout] 7a0a19651fb285120b3378285f801d2f98acb30e05874e768a86608e7a48566f