[INFO] cloning repository https://github.com/Allen-B1/blockcity
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Allen-B1/blockcity" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAllen-B1%2Fblockcity", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAllen-B1%2Fblockcity'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc47028896fe0e9137e2cee4fd786f08c7ef5eec
[INFO] checking Allen-B1/blockcity against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAllen-B1%2Fblockcity" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Allen-B1/blockcity on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Allen-B1/blockcity
[INFO] finished tweaking git repo https://github.com/Allen-B1/blockcity
[INFO] tweaked toml for git repo https://github.com/Allen-B1/blockcity written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Allen-B1/blockcity 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded loom v0.5.4
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 251c77f6a98a500fb664389ce8d9e5bfe893daa96af9b333b9ad1804bbff2982
[INFO] running `Command { std: "docker" "start" "-a" "251c77f6a98a500fb664389ce8d9e5bfe893daa96af9b333b9ad1804bbff2982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "251c77f6a98a500fb664389ce8d9e5bfe893daa96af9b333b9ad1804bbff2982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "251c77f6a98a500fb664389ce8d9e5bfe893daa96af9b333b9ad1804bbff2982", kill_on_drop: false }`
[INFO] [stdout] 251c77f6a98a500fb664389ce8d9e5bfe893daa96af9b333b9ad1804bbff2982
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c26fe199bb7c0127dca117aafd228827f4945e3e0a5724363b7370d2d6cf0d56
[INFO] running `Command { std: "docker" "start" "-a" "c26fe199bb7c0127dca117aafd228827f4945e3e0a5724363b7370d2d6cf0d56", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling yansi v0.5.1
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[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.9.1
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[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling const_fn v0.4.9
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling tracing-core v0.1.24
[INFO] [stderr]    Compiling cookie v0.15.1
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[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
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[INFO] [stderr]    Compiling percent-encoding v2.1.0
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[INFO] [stderr]    Compiling stable-pattern v0.1.0
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[INFO] [stderr]    Compiling async-trait v0.1.53
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[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling devise_core v0.3.1
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[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling pear_codegen v0.2.3
[INFO] [stderr]    Compiling ref-cast-impl v1.0.6
[INFO] [stderr]    Compiling async-stream-impl v0.3.3
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[INFO] [stderr]    Compiling time-macros v0.1.1
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[INFO] [stderr]    Compiling tokio-util v0.7.1
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[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.9
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[INFO] [stderr]    Compiling hyper v0.14.18
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking ubyte v0.10.1
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]    Compiling rocket_http v0.5.0-rc.1
[INFO] [stderr]    Compiling rocket_codegen v0.5.0-rc.1
[INFO] [stderr]     Checking towers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use] extern crate itertools;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[macro_use] extern crate itertools;
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `JavaScript`
[INFO] [stdout]  --> src/main.rs:5:39
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rocket::response::content::{Html, JavaScript};
[INFO] [stdout]   |                                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `JavaScript`
[INFO] [stdout]  --> src/main.rs:5:39
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rocket::response::content::{Html, JavaScript};
[INFO] [stdout]   |                                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/main.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{fs, collections::HashMap, sync::{RwLock,Mutex}};
[INFO] [stdout]   |                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Mutex`
[INFO] [stdout]  --> src/main.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{fs, collections::HashMap, sync::{RwLock,Mutex}};
[INFO] [stdout]   |                                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/main.rs:93:61
[INFO] [stdout]    |
[INFO] [stdout] 93 |             self.owner = self.users.iter().next().map(|(id, data)| *id);
[INFO] [stdout]    |                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/main.rs:93:61
[INFO] [stdout]    |
[INFO] [stdout] 93 |             self.owner = self.users.iter().next().map(|(id, data)| *id);
[INFO] [stdout]    |                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `city_id`
[INFO] [stdout]    --> src/main.rs:165:15
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_city_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]    --> src/main.rs:165:29
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_type`
[INFO] [stdout]    --> src/main.rs:165:46
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |                                              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `city_id`
[INFO] [stdout]    --> src/main.rs:165:15
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_city_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `user_id`
[INFO] [stdout]    --> src/main.rs:165:29
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_user_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `block_type`
[INFO] [stdout]    --> src/main.rs:165:46
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |                                              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_block_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Video` is never constructed
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum Block {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 16 |     User,
[INFO] [stdout] 17 |     Video { source: String }, // vimeo/YT
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Block` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `api_create` is never used
[INFO] [stdout]    --> src/main.rs:165:4
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Video` is never constructed
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | enum Block {
[INFO] [stdout]    |      ----- variant in this enum
[INFO] [stdout] 16 |     User,
[INFO] [stdout] 17 |     Video { source: String }, // vimeo/YT
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Block` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `api_create` is never used
[INFO] [stdout]    --> src/main.rs:165:4
[INFO] [stdout]     |
[INFO] [stdout] 165 | fn api_create(city_id: u32, user_id: UserID, block_type: String) -> Result<String, String> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.80s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: ubyte v0.10.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "c26fe199bb7c0127dca117aafd228827f4945e3e0a5724363b7370d2d6cf0d56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c26fe199bb7c0127dca117aafd228827f4945e3e0a5724363b7370d2d6cf0d56", kill_on_drop: false }`
[INFO] [stdout] c26fe199bb7c0127dca117aafd228827f4945e3e0a5724363b7370d2d6cf0d56