[INFO] fetching crate localsearch 0.11.0...
[INFO] checking localsearch-0.11.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate localsearch 0.11.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate localsearch 0.11.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate localsearch 0.11.0
[INFO] finished tweaking crates.io crate localsearch 0.11.0
[INFO] tweaked toml for crates.io crate localsearch 0.11.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate localsearch 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded auto_impl v1.1.0
[INFO] [stderr]   Downloaded ordered-float v4.1.1
[INFO] [stderr]   Downloaded trait-set v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24dc4f0031a67eeda90828d0b9a569b25f84a50b6c15e25c4c3cb7962b274d3f
[INFO] running `Command { std: "docker" "start" "-a" "24dc4f0031a67eeda90828d0b9a569b25f84a50b6c15e25c4c3cb7962b274d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24dc4f0031a67eeda90828d0b9a569b25f84a50b6c15e25c4c3cb7962b274d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24dc4f0031a67eeda90828d0b9a569b25f84a50b6c15e25c4c3cb7962b274d3f", kill_on_drop: false }`
[INFO] [stdout] 24dc4f0031a67eeda90828d0b9a569b25f84a50b6c15e25c4c3cb7962b274d3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c296ce7863c7c94483352ceb2e4cdff7314088d8b2d04e2f67f84476a2732c81
[INFO] running `Command { std: "docker" "start" "-a" "c296ce7863c7c94483352ceb2e4cdff7314088d8b2d04e2f67f84476a2732c81", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling portable-atomic v1.5.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ordered-float v4.1.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking indicatif v0.17.7
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling auto_impl v1.1.0
[INFO] [stderr]    Compiling trait-set v0.3.0
[INFO] [stderr]     Checking localsearch v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> examples/quadratic_model.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{self, distributions::Uniform, prelude::Distribution};
[INFO] [stdout]   |            ^^^^ the item `rand` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.60s
[INFO] running `Command { std: "docker" "inspect" "c296ce7863c7c94483352ceb2e4cdff7314088d8b2d04e2f67f84476a2732c81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c296ce7863c7c94483352ceb2e4cdff7314088d8b2d04e2f67f84476a2732c81", kill_on_drop: false }`
[INFO] [stdout] c296ce7863c7c94483352ceb2e4cdff7314088d8b2d04e2f67f84476a2732c81
[INFO] checking localsearch-0.11.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate localsearch 0.11.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate localsearch 0.11.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate localsearch 0.11.0
[INFO] finished tweaking crates.io crate localsearch 0.11.0
[INFO] tweaked toml for crates.io crate localsearch 0.11.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate localsearch 0.11.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c37ebd678457930611f0e70a0b21cfb8ec48e7837c584ca3d32fb3c41c439af7
[INFO] running `Command { std: "docker" "start" "-a" "c37ebd678457930611f0e70a0b21cfb8ec48e7837c584ca3d32fb3c41c439af7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c37ebd678457930611f0e70a0b21cfb8ec48e7837c584ca3d32fb3c41c439af7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c37ebd678457930611f0e70a0b21cfb8ec48e7837c584ca3d32fb3c41c439af7", kill_on_drop: false }`
[INFO] [stdout] c37ebd678457930611f0e70a0b21cfb8ec48e7837c584ca3d32fb3c41c439af7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a44792c96bd9a58b21b45e7335fba834c6bed23c3d46d1206205f31b32d918b
[INFO] running `Command { std: "docker" "start" "-a" "4a44792c96bd9a58b21b45e7335fba834c6bed23c3d46d1206205f31b32d918b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling portable-atomic v1.5.1
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking indicatif v0.17.7
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ordered-float v4.1.1
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling auto_impl v1.1.0
[INFO] [stderr]    Compiling trait-set v0.3.0
[INFO] [stderr]     Checking localsearch v0.11.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> examples/quadratic_model.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | use rand::{self, distributions::Uniform, prelude::Distribution};
[INFO] [stdout]   |            ^^^^ the item `rand` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.27s
[INFO] running `Command { std: "docker" "inspect" "4a44792c96bd9a58b21b45e7335fba834c6bed23c3d46d1206205f31b32d918b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a44792c96bd9a58b21b45e7335fba834c6bed23c3d46d1206205f31b32d918b", kill_on_drop: false }`
[INFO] [stdout] 4a44792c96bd9a58b21b45e7335fba834c6bed23c3d46d1206205f31b32d918b