[INFO] fetching crate vingt-et-un 0.1.1...
[INFO] checking vingt-et-un-0.1.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate vingt-et-un 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate vingt-et-un 0.1.1
[INFO] finished tweaking crates.io crate vingt-et-un 0.1.1
[INFO] tweaked toml for crates.io crate vingt-et-un 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vingt-et-un 0.1.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vingt-et-un 0.1.1 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70aebb40f791bf5fa4c5200b9bc15b89adb621c42fe6563930de4307801a7ad5
[INFO] running `Command { std: "docker" "start" "-a" "70aebb40f791bf5fa4c5200b9bc15b89adb621c42fe6563930de4307801a7ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70aebb40f791bf5fa4c5200b9bc15b89adb621c42fe6563930de4307801a7ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70aebb40f791bf5fa4c5200b9bc15b89adb621c42fe6563930de4307801a7ad5", kill_on_drop: false }`
[INFO] [stdout] 70aebb40f791bf5fa4c5200b9bc15b89adb621c42fe6563930de4307801a7ad5
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc7a5ce559604c174443cff558e99190773fa89c08f080152ef45a41eaf16478
[INFO] running `Command { std: "docker" "start" "-a" "bc7a5ce559604c174443cff558e99190773fa89c08f080152ef45a41eaf16478", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[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 vingt-et-un v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `CustomShoe` is never constructed
[INFO] [stdout]   --> src/shoe.rs:47:19
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub(crate) struct CustomShoe {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/shoe.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl CustomShoe {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 52 |     pub fn new(deck: Vec<u8>) -> Box<CustomShoe> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "bc7a5ce559604c174443cff558e99190773fa89c08f080152ef45a41eaf16478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7a5ce559604c174443cff558e99190773fa89c08f080152ef45a41eaf16478", kill_on_drop: false }`
[INFO] [stdout] bc7a5ce559604c174443cff558e99190773fa89c08f080152ef45a41eaf16478