[INFO] fetching crate spare 0.0.3...
[INFO] building spare-0.0.3 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate spare 0.0.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate spare 0.0.3
[INFO] finished tweaking crates.io crate spare 0.0.3
[INFO] tweaked toml for crates.io crate spare 0.0.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spare 0.0.3 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07bf51ff88d89c9f48b23771238f14b5b8fa256b8d14b5dafd1a175488a6160c
[INFO] running `Command { std: "docker" "start" "-a" "07bf51ff88d89c9f48b23771238f14b5b8fa256b8d14b5dafd1a175488a6160c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07bf51ff88d89c9f48b23771238f14b5b8fa256b8d14b5dafd1a175488a6160c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07bf51ff88d89c9f48b23771238f14b5b8fa256b8d14b5dafd1a175488a6160c", kill_on_drop: false }`
[INFO] [stdout] 07bf51ff88d89c9f48b23771238f14b5b8fa256b8d14b5dafd1a175488a6160c
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 973abcea48f5ac9427de592639a1c905b51bae20e90a79a0b8cd354e9ca8ebd9
[INFO] running `Command { std: "docker" "start" "-a" "973abcea48f5ac9427de592639a1c905b51bae20e90a79a0b8cd354e9ca8ebd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling veho v0.0.20
[INFO] [stderr]    Compiling vte v0.15.0
[INFO] [stderr]    Compiling texting v0.0.7
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling aryth v0.0.11
[INFO] [stderr]    Compiling palett v0.0.8
[INFO] [stderr]    Compiling spare v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Joiners` is never used
[INFO] [stdout]  --> src/deco/vector/joiners.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Joiners: Iterator where
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_len` is never used
[INFO] [stdout]   --> src/padder/util.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn max_len<T: AsRef<str>>(col: &Vec<T>, ansi: bool) -> usize
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.92s
[INFO] running `Command { std: "docker" "inspect" "973abcea48f5ac9427de592639a1c905b51bae20e90a79a0b8cd354e9ca8ebd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "973abcea48f5ac9427de592639a1c905b51bae20e90a79a0b8cd354e9ca8ebd9", kill_on_drop: false }`
[INFO] [stdout] 973abcea48f5ac9427de592639a1c905b51bae20e90a79a0b8cd354e9ca8ebd9
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3b331b71947761c0888efaee5ec5a1d1a2f24340b289b1fa0d82920d6fd74b0
[INFO] running `Command { std: "docker" "start" "-a" "f3b331b71947761c0888efaee5ec5a1d1a2f24340b289b1fa0d82920d6fd74b0", kill_on_drop: false }`
[INFO] [stdout] warning: trait `Joiners` is never used
[INFO] [stdout]  --> src/deco/vector/joiners.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Joiners: Iterator where
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_len` is never used
[INFO] [stdout]   --> src/padder/util.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn max_len<T: AsRef<str>>(col: &Vec<T>, ansi: bool) -> usize
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling spare v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Formatter`
[INFO] [stdout]  --> tests/alpha/display_to_number_test.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::{Display, Formatter};
[INFO] [stdout]   |                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num::ParseFloatError`
[INFO] [stdout]  --> tests/alpha/display_to_number_test.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::num::ParseFloatError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vec`
[INFO] [stdout]   --> src/padder/vector.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |         let vec = init(12, |i| pow(2, i).to_string());
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Joiners` is never used
[INFO] [stdout]  --> src/deco/vector/joiners.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub trait Joiners: Iterator where
[INFO] [stdout]   |           ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `Command { std: "docker" "inspect" "f3b331b71947761c0888efaee5ec5a1d1a2f24340b289b1fa0d82920d6fd74b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b331b71947761c0888efaee5ec5a1d1a2f24340b289b1fa0d82920d6fd74b0", kill_on_drop: false }`
[INFO] [stdout] f3b331b71947761c0888efaee5ec5a1d1a2f24340b289b1fa0d82920d6fd74b0