[INFO] fetching crate frd_pu 0.2.6...
[INFO] testing frd_pu-0.2.6 against 1.90.0 for beta-1.91-3
[INFO] extracting crate frd_pu 0.2.6 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate frd_pu 0.2.6
[INFO] finished tweaking crates.io crate frd_pu 0.2.6
[INFO] tweaked toml for crates.io crate frd_pu 0.2.6 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate frd_pu 0.2.6 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate frd_pu 0.2.6 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" "+1.90.0" "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] 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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1cbf024cfccbedcec4a27bbab8eb741ded61037aa1976547963f8d7e58d89283
[INFO] running `Command { std: "docker" "start" "-a" "1cbf024cfccbedcec4a27bbab8eb741ded61037aa1976547963f8d7e58d89283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1cbf024cfccbedcec4a27bbab8eb741ded61037aa1976547963f8d7e58d89283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cbf024cfccbedcec4a27bbab8eb741ded61037aa1976547963f8d7e58d89283", kill_on_drop: false }`
[INFO] [stdout] 1cbf024cfccbedcec4a27bbab8eb741ded61037aa1976547963f8d7e58d89283
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f20218537158ccfa16382c14ffcb1863c559a5da72c6f9486a17b70cec935bb
[INFO] running `Command { std: "docker" "start" "-a" "8f20218537158ccfa16382c14ffcb1863c559a5da72c6f9486a17b70cec935bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling frd_pu v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `transpose` is never used
[INFO] [stdout]    --> src/matrix_vector.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Matrix<'_> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 139 |     fn transpose(m: &Self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]    --> src/distributed_ledger.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct Ledger<T> {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 185 |     /// A unique identifier for this specific ledger instance.
[INFO] [stdout] 186 |     id: u64,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "8f20218537158ccfa16382c14ffcb1863c559a5da72c6f9486a17b70cec935bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f20218537158ccfa16382c14ffcb1863c559a5da72c6f9486a17b70cec935bb", kill_on_drop: false }`
[INFO] [stdout] 8f20218537158ccfa16382c14ffcb1863c559a5da72c6f9486a17b70cec935bb
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1ecdf9a71969141045967c10e7de26ba69fdafa57cc1f4ab634a25a88f0c850
[INFO] running `Command { std: "docker" "start" "-a" "d1ecdf9a71969141045967c10e7de26ba69fdafa57cc1f4ab634a25a88f0c850", kill_on_drop: false }`
[INFO] [stderr]    Compiling frd_pu v0.2.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `transpose` is never used
[INFO] [stdout]    --> src/matrix_vector.rs:139:8
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Matrix<'_> {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 139 |     fn transpose(m: &Self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]    --> src/distributed_ledger.rs:186:5
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct Ledger<T> {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 185 |     /// A unique identifier for this specific ledger instance.
[INFO] [stdout] 186 |     id: u64,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]    --> src/tcp_server.rs:840:9
[INFO] [stdout]     |
[INFO] [stdout] 840 |     use std::thread;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::TcpStream`
[INFO] [stdout]    --> src/tcp_server.rs:842:9
[INFO] [stdout]     |
[INFO] [stdout] 842 |     use std::net::TcpStream;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read` and `Write`
[INFO] [stdout]    --> src/tcp_server.rs:843:19
[INFO] [stdout]     |
[INFO] [stdout] 843 |     use std::io::{Read, Write};
[INFO] [stdout]     |                   ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `sqrt` found for mutable reference `&mut {float}` in the current scope
[INFO] [stdout]    --> src/universal_processor.rs:875:67
[INFO] [stdout]     |
[INFO] [stdout] 875 |         let result = transform_proc.execute(&mut data, |x| *x = x.sqrt());
[INFO] [stdout]     |                                                                   ^^^^ method not found in `&mut {float}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `frd_pu` (lib test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d1ecdf9a71969141045967c10e7de26ba69fdafa57cc1f4ab634a25a88f0c850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1ecdf9a71969141045967c10e7de26ba69fdafa57cc1f4ab634a25a88f0c850", kill_on_drop: false }`
[INFO] [stdout] d1ecdf9a71969141045967c10e7de26ba69fdafa57cc1f4ab634a25a88f0c850