[INFO] fetching crate rocket 0.5.0-rc.1...
[INFO] checking rocket-0.5.0-rc.1 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate rocket 0.5.0-rc.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rocket 0.5.0-rc.1 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rocket 0.5.0-rc.1
[INFO] finished tweaking crates.io crate rocket 0.5.0-rc.1
[INFO] tweaked toml for crates.io crate rocket 0.5.0-rc.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b9a54f78fe40e3b39e300b6365cf826ea37e3634e946c77ff357f73bff42a6d
[INFO] running `Command { std: "docker" "start" "-a" "7b9a54f78fe40e3b39e300b6365cf826ea37e3634e946c77ff357f73bff42a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b9a54f78fe40e3b39e300b6365cf826ea37e3634e946c77ff357f73bff42a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b9a54f78fe40e3b39e300b6365cf826ea37e3634e946c77ff357f73bff42a6d", kill_on_drop: false }`
[INFO] [stdout] 7b9a54f78fe40e3b39e300b6365cf826ea37e3634e946c77ff357f73bff42a6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2c6f3348977f618d51583062e1c7ce3e191605a2d2063f9072804e048cdf4cc
[INFO] running `Command { std: "docker" "start" "-a" "f2c6f3348977f618d51583062e1c7ce3e191605a2d2063f9072804e048cdf4cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
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[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.130
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[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
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[INFO] [stderr]    Compiling parking_lot_core v0.8.5
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[INFO] [stderr]     Checking slab v0.4.5
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[INFO] [stderr]    Compiling encoding_rs v0.8.28
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[INFO] [stderr]    Compiling inlinable_string v0.1.14
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[INFO] [stderr]    Compiling state v0.5.2
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[INFO] [stderr]    Compiling uncased v0.9.6
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[INFO] [stderr]    Compiling lock_api v0.4.5
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[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]    Compiling rocket v0.5.0-rc.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling stable-pattern v0.1.0
[INFO] [stderr]     Checking twoway v0.2.2
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]    Compiling devise_core v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling tokio-macros v1.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling pear_codegen v0.2.3
[INFO] [stderr]    Compiling ref-cast-impl v1.0.6
[INFO] [stderr]    Compiling devise_codegen v0.3.1
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking pear v0.2.3
[INFO] [stderr]    Compiling devise v0.3.1
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking tokio-util v0.6.8
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking ubyte v0.10.1
[INFO] [stderr]     Checking h2 v0.3.6
[INFO] [stderr]     Checking hyper v0.14.13
[INFO] [stderr]     Checking rocket_http v0.5.0-rc.1
[INFO] [stderr]    Compiling rocket_codegen v0.5.0-rc.1
[INFO] [stdout] error[E0432]: unresolved import `pretty_assertions`
[INFO] [stdout]    --> src/config/mod.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     use pretty_assertions::assert_eq;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ use of undeclared crate or module `pretty_assertions`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:420:13
[INFO] [stdout]     |
[INFO] [stdout] 420 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:410:13
[INFO] [stdout]     |
[INFO] [stdout] 410 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:387:13
[INFO] [stdout]     |
[INFO] [stdout] 387 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:378:13
[INFO] [stdout]     |
[INFO] [stdout] 378 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:370:13
[INFO] [stdout]     |
[INFO] [stdout] 370 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:352:13
[INFO] [stdout]     |
[INFO] [stdout] 352 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:334:13
[INFO] [stdout]     |
[INFO] [stdout] 334 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:324:13
[INFO] [stdout]     |
[INFO] [stdout] 324 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:294:13
[INFO] [stdout]     |
[INFO] [stdout] 294 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:257:13
[INFO] [stdout]     |
[INFO] [stdout] 257 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:207:13
[INFO] [stdout]     |
[INFO] [stdout] 207 |             assert_eq!(config, Config {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:186:13
[INFO] [stdout]     |
[INFO] [stdout] 186 |             assert_eq!(figment.profile(), "random");
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:182:13
[INFO] [stdout]     |
[INFO] [stdout] 182 |             assert_eq!(figment.profile(), "release");
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             assert_eq!(figment.profile(), "debug");
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 |                 assert_eq!(config, Config::default());
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `assert_eq`
[INFO] [stdout]    --> src/config/mod.rs:154:13
[INFO] [stdout]     |
[INFO] [stdout] 154 |             assert_eq!(default, Config::default());
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:151:18
[INFO] [stdout]     |
[INFO] [stdout] 151 |         figment::Jail::expect_with(|_| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:161:18
[INFO] [stdout]     |
[INFO] [stdout] 161 |         figment::Jail::expect_with(|_| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:175:18
[INFO] [stdout]     |
[INFO] [stdout] 175 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:194:18
[INFO] [stdout]     |
[INFO] [stdout] 194 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:310:18
[INFO] [stdout]     |
[INFO] [stdout] 310 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:349:18
[INFO] [stdout]     |
[INFO] [stdout] 349 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:401:18
[INFO] [stdout]     |
[INFO] [stdout] 401 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:463:18
[INFO] [stdout]     |
[INFO] [stdout] 463 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Jail` in `figment`
[INFO] [stdout]    --> src/config/mod.rs:478:18
[INFO] [stdout]     |
[INFO] [stdout] 478 |         figment::Jail::expect_with(|jail| {
[INFO] [stdout]     |                  ^^^^ could not find `Jail` in `figment`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::Ipv4Addr`
[INFO] [stdout]    --> src/config/mod.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     use std::net::Ipv4Addr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Profile`
[INFO] [stdout]    --> src/config/mod.rs:142:28
[INFO] [stdout]     |
[INFO] [stdout] 142 |     use figment::{Figment, Profile};
[INFO] [stdout]     |                            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Ident`, `Shutdown`, `TlsConfig`
[INFO] [stdout]    --> src/config/mod.rs:145:33
[INFO] [stdout]     |
[INFO] [stdout] 145 |     use crate::config::{Config, TlsConfig, Shutdown, Ident};
[INFO] [stdout]     |                                 ^^^^^^^^^  ^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::log::LogLevel`
[INFO] [stdout]    --> src/config/mod.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |     use crate::log::LogLevel;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Limits`, `ToByteUnit`
[INFO] [stdout]    --> src/config/mod.rs:147:23
[INFO] [stdout]     |
[INFO] [stdout] 147 |     use crate::data::{Limits, ToByteUnit};
[INFO] [stdout]     |                       ^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 29 previous errors; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rocket` due to 30 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f2c6f3348977f618d51583062e1c7ce3e191605a2d2063f9072804e048cdf4cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2c6f3348977f618d51583062e1c7ce3e191605a2d2063f9072804e048cdf4cc", kill_on_drop: false }`
[INFO] [stdout] f2c6f3348977f618d51583062e1c7ce3e191605a2d2063f9072804e048cdf4cc
