[INFO] fetching crate miniboosts 0.3.4...
[INFO] checking miniboosts-0.3.4 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate miniboosts 0.3.4 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate miniboosts 0.3.4 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate miniboosts 0.3.4
[INFO] finished tweaking crates.io crate miniboosts 0.3.4
[INFO] tweaked toml for crates.io crate miniboosts 0.3.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] [stderr]      Locking 238 packages to latest compatible versions
[INFO] [stderr]       Adding atoi_simd v0.15.6 (available: v0.16.0)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb2ad0a1fd6ea3b0857317fded317f078ee32645dd731b54a4ee23e81a31ed8a
[INFO] running `Command { std: "docker" "start" "-a" "bb2ad0a1fd6ea3b0857317fded317f078ee32645dd731b54a4ee23e81a31ed8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb2ad0a1fd6ea3b0857317fded317f078ee32645dd731b54a4ee23e81a31ed8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb2ad0a1fd6ea3b0857317fded317f078ee32645dd731b54a4ee23e81a31ed8a", kill_on_drop: false }`
[INFO] [stdout] bb2ad0a1fd6ea3b0857317fded317f078ee32645dd731b54a4ee23e81a31ed8a
[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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5f466cf6fc9315309d74e19d5774a512bdf975573b9652eb8bc060550bea098
[INFO] running `Command { std: "docker" "start" "-a" "b5f466cf6fc9315309d74e19d5774a512bdf975573b9652eb8bc060550bea098", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
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[INFO] [stdout] warning: function `entropy_from_uni_distribution` is never used
[INFO] [stdout]    --> src/common/utils.rs:314:8
[INFO] [stdout]     |
[INFO] [stdout] 314 | pub fn entropy_from_uni_distribution<T: AsRef<[f64]>>(dist: T) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `entropy` is never used
[INFO] [stdout]    --> src/common/utils.rs:325:8
[INFO] [stdout]     |
[INFO] [stdout] 325 | pub fn entropy<T: AsRef<[f64]>>(dist: T) -> f64 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `entropy_from_uni_distribution` is never used
[INFO] [stdout]    --> src/common/utils.rs:314:8
[INFO] [stdout]     |
[INFO] [stdout] 314 | pub fn entropy_from_uni_distribution<T: AsRef<[f64]>>(dist: T) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `entropy` is never used
[INFO] [stdout]    --> src/common/utils.rs:325:8
[INFO] [stdout]     |
[INFO] [stdout] 325 | pub fn entropy<T: AsRef<[f64]>>(dist: T) -> f64 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings 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 51.79s
[INFO] running `Command { std: "docker" "inspect" "b5f466cf6fc9315309d74e19d5774a512bdf975573b9652eb8bc060550bea098", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5f466cf6fc9315309d74e19d5774a512bdf975573b9652eb8bc060550bea098", kill_on_drop: false }`
[INFO] [stdout] b5f466cf6fc9315309d74e19d5774a512bdf975573b9652eb8bc060550bea098