[INFO] cloning repository https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvancegillies%2FToy-Gene-Sequence-Game-Idea", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvancegillies%2FToy-Gene-Sequence-Game-Idea'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60159d0f669d5be6d9519c24c411052fb2742c2d
[INFO] building vancegillies/Toy-Gene-Sequence-Game-Idea against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvancegillies%2FToy-Gene-Sequence-Game-Idea" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea
[INFO] finished tweaking git repo https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea
[INFO] tweaked toml for git repo https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vancegillies/Toy-Gene-Sequence-Game-Idea 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70e406000f14a05f1ea9c1f681d260e5561088e08b66033f4184bd16b03a8f64
[INFO] running `Command { std: "docker" "start" "-a" "70e406000f14a05f1ea9c1f681d260e5561088e08b66033f4184bd16b03a8f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70e406000f14a05f1ea9c1f681d260e5561088e08b66033f4184bd16b03a8f64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70e406000f14a05f1ea9c1f681d260e5561088e08b66033f4184bd16b03a8f64", kill_on_drop: false }`
[INFO] [stdout] 70e406000f14a05f1ea9c1f681d260e5561088e08b66033f4184bd16b03a8f64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54c6f617c3efd92d80f8a748d33a8a1f17280e9c95bc9edead945ae684aea996
[INFO] running `Command { std: "docker" "start" "-a" "54c6f617c3efd92d80f8a748d33a8a1f17280e9c95bc9edead945ae684aea996", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling thingo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `attributes::Attributes`
[INFO] [stdout]  --> src/main.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sequencer::{Sequencer, attributes::Attributes};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_binary` is never used
[INFO] [stdout]   --> src/gene.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl GeneChar {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn from_binary(s: &str) -> Option<GeneChar> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sequence_from_binary` is never used
[INFO] [stdout]    --> src/gene.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub fn sequence_from_binary(binary: &str) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_binary` is never used
[INFO] [stdout]   --> src/sequencer/attributes.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Attributes {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 86 |     pub fn from_binary(binary: &str) -> Attributes {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `Command { std: "docker" "inspect" "54c6f617c3efd92d80f8a748d33a8a1f17280e9c95bc9edead945ae684aea996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54c6f617c3efd92d80f8a748d33a8a1f17280e9c95bc9edead945ae684aea996", kill_on_drop: false }`
[INFO] [stdout] 54c6f617c3efd92d80f8a748d33a8a1f17280e9c95bc9edead945ae684aea996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42dbf4faa10f18d43960808d41cfa2ad734bc8cd751430da108430df89d734de
[INFO] running `Command { std: "docker" "start" "-a" "42dbf4faa10f18d43960808d41cfa2ad734bc8cd751430da108430df89d734de", kill_on_drop: false }`
[INFO] [stderr]    Compiling thingo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `attributes::Attributes`
[INFO] [stdout]  --> src/main.rs:5:28
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sequencer::{Sequencer, attributes::Attributes};
[INFO] [stdout]   |                            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_binary` is never used
[INFO] [stdout]   --> src/gene.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl GeneChar {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn from_binary(s: &str) -> Option<GeneChar> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sequence_from_binary` is never used
[INFO] [stdout]    --> src/gene.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 | pub fn sequence_from_binary(binary: &str) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_binary` is never used
[INFO] [stdout]   --> src/sequencer/attributes.rs:86:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Attributes {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 86 |     pub fn from_binary(binary: &str) -> Attributes {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "42dbf4faa10f18d43960808d41cfa2ad734bc8cd751430da108430df89d734de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42dbf4faa10f18d43960808d41cfa2ad734bc8cd751430da108430df89d734de", kill_on_drop: false }`
[INFO] [stdout] 42dbf4faa10f18d43960808d41cfa2ad734bc8cd751430da108430df89d734de