[INFO] fetching crate cargo-referendum 0.1.1...
[INFO] testing cargo-referendum-0.1.1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate cargo-referendum 0.1.1 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate cargo-referendum 0.1.1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-referendum 0.1.1
[INFO] finished tweaking crates.io crate cargo-referendum 0.1.1
[INFO] tweaked toml for crates.io crate cargo-referendum 0.1.1 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] crate crates.io crate cargo-referendum 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fasthash v0.4.0
[INFO] [stderr]   Downloaded string-builder v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fc32865f2009d43ad750e410b2df9a1507e533363b37f2c9f72f1f067ed6ef0
[INFO] running `Command { std: "docker" "start" "-a" "9fc32865f2009d43ad750e410b2df9a1507e533363b37f2c9f72f1f067ed6ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fc32865f2009d43ad750e410b2df9a1507e533363b37f2c9f72f1f067ed6ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fc32865f2009d43ad750e410b2df9a1507e533363b37f2c9f72f1f067ed6ef0", kill_on_drop: false }`
[INFO] [stdout] 9fc32865f2009d43ad750e410b2df9a1507e533363b37f2c9f72f1f067ed6ef0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eadc2f37968fca754c0e4dafa97fa46406ca3c80c8b304ceb5920043268feeb
[INFO] running `Command { std: "docker" "start" "-a" "1eadc2f37968fca754c0e4dafa97fa46406ca3c80c8b304ceb5920043268feeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling seahash v3.0.7
[INFO] [stderr]    Compiling string-builder v0.2.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling xoroshiro128 v0.3.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling thiserror v1.0.25
[INFO] [stderr]    Compiling fasthash v0.4.0
[INFO] [stderr]    Compiling cargo-referendum v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `toolkits` is never read
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut toolkits: Vec<_> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_toolkits`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let old_toolkits = vec![
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_toolkits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.23s
[INFO] running `Command { std: "docker" "inspect" "1eadc2f37968fca754c0e4dafa97fa46406ca3c80c8b304ceb5920043268feeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eadc2f37968fca754c0e4dafa97fa46406ca3c80c8b304ceb5920043268feeb", kill_on_drop: false }`
[INFO] [stdout] 1eadc2f37968fca754c0e4dafa97fa46406ca3c80c8b304ceb5920043268feeb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf3158b99a163814f095038812bc07ce49d38f2a4fcc2e96de5828f3d70541ff
[INFO] running `Command { std: "docker" "start" "-a" "cf3158b99a163814f095038812bc07ce49d38f2a4fcc2e96de5828f3d70541ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-referendum v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `toolkits` is never read
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut toolkits: Vec<_> = Vec::new();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `old_toolkits`
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let old_toolkits = vec![
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_toolkits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `Command { std: "docker" "inspect" "cf3158b99a163814f095038812bc07ce49d38f2a4fcc2e96de5828f3d70541ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf3158b99a163814f095038812bc07ce49d38f2a4fcc2e96de5828f3d70541ff", kill_on_drop: false }`
[INFO] [stdout] cf3158b99a163814f095038812bc07ce49d38f2a4fcc2e96de5828f3d70541ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9042951ccdbe7d2d7b95b5c878f2a43933e460dc288aaeda8c0e03870c27c5dc
[INFO] running `Command { std: "docker" "start" "-a" "9042951ccdbe7d2d7b95b5c878f2a43933e460dc288aaeda8c0e03870c27c5dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: value assigned to `toolkits` is never read
[INFO] [stderr]   --> src/main.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let mut toolkits: Vec<_> = Vec::new();
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `old_toolkits`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let old_toolkits = vec![
[INFO] [stderr]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_old_toolkits`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `cargo-referendum` (bin "cargo-referendum" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_referendum-5ac80f5d74b58eb8)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test tests::consensus_map_normal_generation ... ok
[INFO] [stdout] test tests::dissenting_result_normal_generation ... ok
[INFO] [stdout] test tests::consensus_result_normal_generation ... ok
[INFO] [stdout] test tests::get_consensus ... ok
[INFO] [stdout] test tests::parse_double_test ... ok
[INFO] [stdout] test tests::parse_single_test ... ok
[INFO] [stdout] test tests::no_consensus_result_normal_generation ... ok
[INFO] [stdout] test tests::test_failure_result_generation ... ok
[INFO] [stdout] test tests::extract_test_name ... ok
[INFO] [stdout] test tests::test_output_generation ... ok
[INFO] [stdout] test tests::test_pass_result_generation ... ok
[INFO] [stdout] test tests::test_output_generation_no_output ... ok
[INFO] [stdout] test tests::vote_all_consensus ... ok
[INFO] [stdout] test tests::vote_all_unmatched ... ok
[INFO] [stdout] test tests::vote_no_consensus ... ok
[INFO] [stdout] test tests::multiple_test_outputs ... ok
[INFO] [stdout] test tests::get_test_result_normal ... ok
[INFO] [stdout] test tests::get_test_result_test_panics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cargo_referendum-1f66e4b58d604d82)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cargo-referendum
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9042951ccdbe7d2d7b95b5c878f2a43933e460dc288aaeda8c0e03870c27c5dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9042951ccdbe7d2d7b95b5c878f2a43933e460dc288aaeda8c0e03870c27c5dc", kill_on_drop: false }`
[INFO] [stdout] 9042951ccdbe7d2d7b95b5c878f2a43933e460dc288aaeda8c0e03870c27c5dc