[INFO] cloning repository https://github.com/gnawinganimal/flashcards
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gnawinganimal/flashcards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnawinganimal%2Fflashcards", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnawinganimal%2Fflashcards'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5d9a1dea92182f976ceb5ebdd9ab413ca1216722
[INFO] checking gnawinganimal/flashcards against master#e3e432d4d65a55e6db167598e96db2bcb163e316 for pr-140313
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnawinganimal%2Fflashcards" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gnawinganimal/flashcards on toolchain e3e432d4d65a55e6db167598e96db2bcb163e316
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gnawinganimal/flashcards
[INFO] finished tweaking git repo https://github.com/gnawinganimal/flashcards
[INFO] tweaked toml for git repo https://github.com/gnawinganimal/flashcards written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gnawinganimal/flashcards 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" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fc11a169f9fc76a296825d38549aecfdada6ff5943031228e502f1fee9761d6
[INFO] running `Command { std: "docker" "start" "-a" "5fc11a169f9fc76a296825d38549aecfdada6ff5943031228e502f1fee9761d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fc11a169f9fc76a296825d38549aecfdada6ff5943031228e502f1fee9761d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc11a169f9fc76a296825d38549aecfdada6ff5943031228e502f1fee9761d6", kill_on_drop: false }`
[INFO] [stdout] 5fc11a169f9fc76a296825d38549aecfdada6ff5943031228e502f1fee9761d6
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+e3e432d4d65a55e6db167598e96db2bcb163e316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79d7f1f89e141e2aabaa2142169c51c4d694f386be6b60befb02cb62549b9164
[INFO] running `Command { std: "docker" "start" "-a" "79d7f1f89e141e2aabaa2142169c51c4d694f386be6b60befb02cb62549b9164", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.10
[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 flashcards v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `btree_map::Iter`
[INFO] [stdout]  --> src/session.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{btree_map::Iter, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `btree_map::Iter`
[INFO] [stdout]  --> src/session.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{btree_map::Iter, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `schema::Kind`
[INFO] [stdout]  --> src/session.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::{deck::Deck, card::Value, schema::Kind};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `schema::Kind`
[INFO] [stdout]  --> src/session.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::{deck::Deck, card::Value, schema::Kind};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "79d7f1f89e141e2aabaa2142169c51c4d694f386be6b60befb02cb62549b9164", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79d7f1f89e141e2aabaa2142169c51c4d694f386be6b60befb02cb62549b9164", kill_on_drop: false }`
[INFO] [stdout] 79d7f1f89e141e2aabaa2142169c51c4d694f386be6b60befb02cb62549b9164