[INFO] fetching crate test-sampler 0.1.0... [INFO] checking test-sampler-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate test-sampler 0.1.0 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate test-sampler 0.1.0 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 test-sampler 0.1.0 [INFO] finished tweaking crates.io crate test-sampler 0.1.0 [INFO] tweaked toml for crates.io crate test-sampler 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 69 packages [INFO] [stderr] Adding argmin v0.8.1 (latest: v0.10.0) [INFO] [stderr] Adding argmin-math v0.3.0 (latest: v0.4.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [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] Downloading crates ... [INFO] [stderr] Downloaded is_sorted v0.1.1 [INFO] [stderr] Downloaded argmin v0.8.1 [INFO] [stderr] Downloaded argmin-math v0.3.0 [INFO] [stderr] Downloaded slog-async v2.8.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ef46b9d019999c894ed9e32ccf8500d7a4c8d579e0ff40441c9421631fe0e5cf [INFO] running `Command { std: "docker" "start" "-a" "ef46b9d019999c894ed9e32ccf8500d7a4c8d579e0ff40441c9421631fe0e5cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ef46b9d019999c894ed9e32ccf8500d7a4c8d579e0ff40441c9421631fe0e5cf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ef46b9d019999c894ed9e32ccf8500d7a4c8d579e0ff40441c9421631fe0e5cf", kill_on_drop: false }` [INFO] [stdout] ef46b9d019999c894ed9e32ccf8500d7a4c8d579e0ff40441c9421631fe0e5cf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b9b101b845772c7e7f6dbccdf59441daa1d93912f3fc1fbff7745dae3dfbb4b9 [INFO] running `Command { std: "docker" "start" "-a" "b9b101b845772c7e7f6dbccdf59441daa1d93912f3fc1fbff7745dae3dfbb4b9", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling slog v2.7.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling num-conv v0.1.0 [INFO] [stderr] Compiling time-core v0.1.2 [INFO] [stderr] Compiling anyhow v1.0.81 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Checking deranged v0.3.11 [INFO] [stderr] Compiling slog-async v2.8.0 [INFO] [stderr] Compiling paste v1.0.14 [INFO] [stderr] Checking take_mut v0.2.2 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking is-terminal v0.4.12 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking is_sorted v0.1.1 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Checking term v0.7.0 [INFO] [stderr] Compiling time-macros v0.2.17 [INFO] [stderr] Checking crossbeam-channel v0.5.12 [INFO] [stderr] Checking num-complex v0.4.5 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking approx v0.5.1 [INFO] [stderr] Checking time v0.3.34 [INFO] [stderr] Checking slog-term v2.9.1 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand_xoshiro v0.6.0 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking slog-json v2.6.1 [INFO] [stderr] Checking argmin-math v0.3.0 [INFO] [stderr] Checking argmin v0.8.1 [INFO] [stderr] Checking test-sampler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/stat_tests.rs:41:17 [INFO] [stdout] | [INFO] [stdout] 41 | use std::iter::{Iterator, Peekable}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/stat_tests.rs:41:17 [INFO] [stdout] | [INFO] [stdout] 41 | use std::iter::{Iterator, Peekable}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `approx` is imported redundantly [INFO] [stdout] --> src/lib.rs:397:9 [INFO] [stdout] | [INFO] [stdout] 397 | use approx; [INFO] [stdout] | ^^^^^^ the item `approx` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.02s [INFO] running `Command { std: "docker" "inspect" "b9b101b845772c7e7f6dbccdf59441daa1d93912f3fc1fbff7745dae3dfbb4b9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b9b101b845772c7e7f6dbccdf59441daa1d93912f3fc1fbff7745dae3dfbb4b9", kill_on_drop: false }` [INFO] [stdout] b9b101b845772c7e7f6dbccdf59441daa1d93912f3fc1fbff7745dae3dfbb4b9 [INFO] checking test-sampler-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate test-sampler 0.1.0 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate test-sampler 0.1.0 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 test-sampler 0.1.0 [INFO] finished tweaking crates.io crate test-sampler 0.1.0 [INFO] tweaked toml for crates.io crate test-sampler 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 69 packages [INFO] [stderr] Adding argmin v0.8.1 (latest: v0.10.0) [INFO] [stderr] Adding argmin-math v0.3.0 (latest: v0.4.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4bdb796a38ffbde7bc97f846fb30dc3200408ea89a864ebb04b8949218e9b6c8 [INFO] running `Command { std: "docker" "start" "-a" "4bdb796a38ffbde7bc97f846fb30dc3200408ea89a864ebb04b8949218e9b6c8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4bdb796a38ffbde7bc97f846fb30dc3200408ea89a864ebb04b8949218e9b6c8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4bdb796a38ffbde7bc97f846fb30dc3200408ea89a864ebb04b8949218e9b6c8", kill_on_drop: false }` [INFO] [stdout] 4bdb796a38ffbde7bc97f846fb30dc3200408ea89a864ebb04b8949218e9b6c8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1e967c90df6f1134dd8568e6153b6d91ea3862731993c82f5da406e34bc8f639 [INFO] running `Command { std: "docker" "start" "-a" "1e967c90df6f1134dd8568e6153b6d91ea3862731993c82f5da406e34bc8f639", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling slog v2.7.0 [INFO] [stderr] Compiling time-core v0.1.2 [INFO] [stderr] Compiling num-conv v0.1.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Compiling anyhow v1.0.81 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Checking deranged v0.3.11 [INFO] [stderr] Compiling slog-async v2.8.0 [INFO] [stderr] Compiling paste v1.0.14 [INFO] [stderr] Checking take_mut v0.2.2 [INFO] [stderr] Checking getrandom v0.2.12 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking is-terminal v0.4.12 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking is_sorted v0.1.1 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Compiling time-macros v0.2.17 [INFO] [stderr] Checking term v0.7.0 [INFO] [stderr] Checking crossbeam-channel v0.5.12 [INFO] [stderr] Checking time v0.3.34 [INFO] [stderr] Checking num-complex v0.4.5 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking approx v0.5.1 [INFO] [stderr] Checking slog-term v2.9.1 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand_xoshiro v0.6.0 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking slog-json v2.6.1 [INFO] [stderr] Checking argmin-math v0.3.0 [INFO] [stderr] Checking argmin v0.8.1 [INFO] [stderr] Checking test-sampler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/stat_tests.rs:41:17 [INFO] [stdout] | [INFO] [stdout] 41 | use std::iter::{Iterator, Peekable}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Iterator` is imported redundantly [INFO] [stdout] --> src/stat_tests.rs:41:17 [INFO] [stdout] | [INFO] [stdout] 41 | use std::iter::{Iterator, Peekable}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Iterator` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `approx` is imported redundantly [INFO] [stdout] --> src/lib.rs:397:9 [INFO] [stdout] | [INFO] [stdout] 397 | use approx; [INFO] [stdout] | ^^^^^^ the item `approx` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.53s [INFO] running `Command { std: "docker" "inspect" "1e967c90df6f1134dd8568e6153b6d91ea3862731993c82f5da406e34bc8f639", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1e967c90df6f1134dd8568e6153b6d91ea3862731993c82f5da406e34bc8f639", kill_on_drop: false }` [INFO] [stdout] 1e967c90df6f1134dd8568e6153b6d91ea3862731993c82f5da406e34bc8f639