[INFO] fetching crate demo2 0.1.0...
[INFO] checking demo2-0.1.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate demo2 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate demo2 0.1.0
[INFO] finished tweaking crates.io crate demo2 0.1.0
[INFO] tweaked toml for crates.io crate demo2 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate demo2 0.1.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate demo2 0.1.0 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8f9d2bd53c777271508d23fc38e2e4d0bbb0954982d854040786596951409bb
[INFO] running `Command { std: "docker" "start" "-a" "c8f9d2bd53c777271508d23fc38e2e4d0bbb0954982d854040786596951409bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8f9d2bd53c777271508d23fc38e2e4d0bbb0954982d854040786596951409bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8f9d2bd53c777271508d23fc38e2e4d0bbb0954982d854040786596951409bb", kill_on_drop: false }`
[INFO] [stdout] c8f9d2bd53c777271508d23fc38e2e4d0bbb0954982d854040786596951409bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abcd963ad1fe64ebd8d4308522c9ecd92e46d7f0cb10374fcf79c667473fc055
[INFO] running `Command { std: "docker" "start" "-a" "abcd963ad1fe64ebd8d4308522c9ecd92e46d7f0cb10374fcf79c667473fc055", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking demo2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `DiceRoll` is never constructed
[INFO] [stdout]  --> src/model.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct DiceRoll {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ParseError` is never used
[INFO] [stdout]  --> src/parse.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum ParseError {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/parse.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn parse(s: &str) -> Result<DiceRoll, ParseError> {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_roll` is never used
[INFO] [stdout]  --> src/roll.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn run_roll(roll: DiceRoll) -> usize {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/roll.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         for i in 0..1000 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "abcd963ad1fe64ebd8d4308522c9ecd92e46d7f0cb10374fcf79c667473fc055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abcd963ad1fe64ebd8d4308522c9ecd92e46d7f0cb10374fcf79c667473fc055", kill_on_drop: false }`
[INFO] [stdout] abcd963ad1fe64ebd8d4308522c9ecd92e46d7f0cb10374fcf79c667473fc055