[INFO] cloning repository https://github.com/youngday/easy_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/youngday/easy_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoungday%2Feasy_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoungday%2Feasy_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 00ca7f32899f18c539fda3859ac8657962d0cb1d
[INFO] checking youngday/easy_example against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoungday%2Feasy_example" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/youngday/easy_example on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/youngday/easy_example
[INFO] finished tweaking git repo https://github.com/youngday/easy_example
[INFO] tweaked toml for git repo https://github.com/youngday/easy_example written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/youngday/easy_example 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-task v0.3.25
[INFO] [stderr]   Downloaded jobserver v0.1.25
[INFO] [stderr]   Downloaded futures-sink v0.3.25
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded futures-io v0.3.25
[INFO] [stderr]   Downloaded futures-core v0.3.25
[INFO] [stderr]   Downloaded futures-util v0.3.25
[INFO] [stderr]   Downloaded futures-executor v0.3.25
[INFO] [stderr]   Downloaded system-deps v6.0.3
[INFO] [stderr]   Downloaded reqwest v0.12.1
[INFO] [stderr]   Downloaded cfg-expr v0.11.0
[INFO] [stderr]   Downloaded nix v0.25.0
[INFO] [stderr]   Downloaded async-trait v0.1.58
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.81
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.81
[INFO] [stderr]   Downloaded cxx v1.0.81
[INFO] [stderr]   Downloaded zeromq-src v0.2.2+4.3.4
[INFO] [stderr]   Downloaded dircpy v0.3.13
[INFO] [stderr]   Downloaded pest v2.4.1
[INFO] [stderr]   Downloaded pest_meta v2.4.1
[INFO] [stderr]   Downloaded pest_generator v2.4.1
[INFO] [stderr]   Downloaded pest_derive v2.4.1
[INFO] [stderr]   Downloaded config v0.14.0
[INFO] [stderr]   Downloaded cxx-build v1.0.81
[INFO] [stderr]   Downloaded tmq v0.4.0
[INFO] [stderr]   Downloaded ipnet v2.5.1
[INFO] [stderr]   Downloaded openssl v0.10.42
[INFO] [stderr]   Downloaded openssl-sys v0.9.77
[INFO] [stderr]   Downloaded rumqttc v0.24.0
[INFO] [stderr]   Downloaded mio-serial v5.0.3
[INFO] [stderr]   Downloaded jwalk v0.6.0
[INFO] [stderr]   Downloaded zmq-sys v0.12.0
[INFO] [stderr]   Downloaded zmq v0.10.0
[INFO] [stderr]   Downloaded tokio-stream v0.1.11
[INFO] [stderr]   Downloaded futures-channel v0.3.25
[INFO] [stderr]   Downloaded futures v0.3.25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06a82f18efae46ce8f3eb41444e180bdaa3d1f260b6bbec9958e06c3257eaebe
[INFO] running `Command { std: "docker" "start" "-a" "06a82f18efae46ce8f3eb41444e180bdaa3d1f260b6bbec9958e06c3257eaebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06a82f18efae46ce8f3eb41444e180bdaa3d1f260b6bbec9958e06c3257eaebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06a82f18efae46ce8f3eb41444e180bdaa3d1f260b6bbec9958e06c3257eaebe", kill_on_drop: false }`
[INFO] [stdout] 06a82f18efae46ce8f3eb41444e180bdaa3d1f260b6bbec9958e06c3257eaebe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7ae3d14a604d1d0608ae9a332c442876cbde20fd2a952e02095572146dedada
[INFO] running `Command { std: "docker" "start" "-a" "c7ae3d14a604d1d0608ae9a332c442876cbde20fd2a952e02095572146dedada", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling cfg-expr v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]     Checking rustls-pki-types v1.4.0
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking const-random v0.1.18
[INFO] [stderr]    Compiling rustls v0.22.2
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]     Checking winnow v0.6.5
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking dlv-list v0.5.2
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]    Compiling zmq v0.10.0
[INFO] [stderr]     Checking destructure_traitobject v0.2.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling async-trait v0.1.58
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking unsafe-any-ors v1.0.0
[INFO] [stderr]     Checking nix v0.25.0
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]     Checking rustls-pemfile v2.1.1
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking ordered-multimap v0.6.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking rust-ini v0.19.0
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling openssl-sys v0.9.77
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking convert_case v0.6.0
[INFO] [stderr]     Checking rustls-native-certs v0.7.0
[INFO] [stderr]     Checking serialport v4.2.0
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking typemap-ors v1.0.0
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking thread-id v4.0.0
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking ipnet v2.5.1
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking base64 v0.22.0
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling jwalk v0.6.0
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling dircpy v0.3.13
[INFO] [stderr]    Compiling zeromq-src v0.2.2+4.3.4
[INFO] [stderr]    Compiling system-deps v6.0.3
[INFO] [stderr]    Compiling futures-macro v0.3.25
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling zmq-sys v0.12.0
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]    Compiling pest v2.4.1
[INFO] [stderr]    Compiling pest_meta v2.4.1
[INFO] [stderr]     Checking futures-executor v0.3.25
[INFO] [stderr]     Checking futures v0.3.25
[INFO] [stderr]    Compiling pest_generator v2.4.1
[INFO] [stderr]    Compiling pest_derive v2.4.1
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking toml_edit v0.22.9
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking ron v0.8.1
[INFO] [stderr]     Checking mio-serial v5.0.3
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking json5 v0.4.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_yaml v0.9.25
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking pretty_env_logger v0.5.0
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking config v0.14.0
[INFO] [stderr]     Checking log4rs v1.3.0
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-rustls v0.25.0
[INFO] [stderr]     Checking tmq v0.4.0
[INFO] [stderr]     Checking tokio-stream v0.1.11
[INFO] [stderr]     Checking tokio-serial v5.4.4
[INFO] [stderr]     Checking rumqttc v0.24.0
[INFO] [stderr]     Checking h2 v0.4.3
[INFO] [stderr]     Checking hyper v1.2.0
[INFO] [stderr]     Checking hyper-util v0.1.3
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.1
[INFO] [stderr]     Checking easy_example v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `debug`, `error`, `trace`, `warn`
[INFO] [stdout]  --> examples/base64.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::{debug, error, info, trace, warn};
[INFO] [stdout]   |           ^^^^^  ^^^^^        ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log4rs`
[INFO] [stdout]  --> examples/base64.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alphabet`, `self`
[INFO] [stdout]  --> examples/base64.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use base64::{Engine as _, engine::{self, general_purpose}, alphabet};
[INFO] [stdout]   |                                    ^^^^                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/tcp-client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> examples/mqtt-asyncpubsub.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rumqttc::{self, AsyncClient, MqttOptions, QoS};
[INFO] [stdout]   |               ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/tcp-server.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/zeromq-tmq.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/post.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "c7ae3d14a604d1d0608ae9a332c442876cbde20fd2a952e02095572146dedada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7ae3d14a604d1d0608ae9a332c442876cbde20fd2a952e02095572146dedada", kill_on_drop: false }`
[INFO] [stdout] c7ae3d14a604d1d0608ae9a332c442876cbde20fd2a952e02095572146dedada
[INFO] checking youngday/easy_example against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyoungday%2Feasy_example" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/youngday/easy_example on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/youngday/easy_example
[INFO] finished tweaking git repo https://github.com/youngday/easy_example
[INFO] tweaked toml for git repo https://github.com/youngday/easy_example written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/youngday/easy_example 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14ebe0f2c39b400137fae052b855ee381613cdbf0c9a652a352026e0437bd810
[INFO] running `Command { std: "docker" "start" "-a" "14ebe0f2c39b400137fae052b855ee381613cdbf0c9a652a352026e0437bd810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14ebe0f2c39b400137fae052b855ee381613cdbf0c9a652a352026e0437bd810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ebe0f2c39b400137fae052b855ee381613cdbf0c9a652a352026e0437bd810", kill_on_drop: false }`
[INFO] [stdout] 14ebe0f2c39b400137fae052b855ee381613cdbf0c9a652a352026e0437bd810
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0543d0ce448baa7673a76a7b9086b5d24de9207f08f43839fd76c81b47128091
[INFO] running `Command { std: "docker" "start" "-a" "0543d0ce448baa7673a76a7b9086b5d24de9207f08f43839fd76c81b47128091", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling syn v2.0.53
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling cfg-expr v0.11.0
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]     Checking rustls-pki-types v1.4.0
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking tower-layer v0.3.2
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking winnow v0.6.5
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rustls v0.22.2
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking http-body v1.0.0
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]     Checking const-random v0.1.18
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking destructure_traitobject v0.2.0
[INFO] [stderr]     Checking dlv-list v0.5.2
[INFO] [stderr]    Compiling zmq v0.10.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling async-trait v0.1.58
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking ordered-multimap v0.6.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking unsafe-any-ors v1.0.0
[INFO] [stderr]     Checking nix v0.25.0
[INFO] [stderr]     Checking http-body-util v0.1.1
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking rustls-pemfile v2.1.1
[INFO] [stderr]     Checking unsafe-libyaml v0.2.11
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking iana-time-zone v0.1.53
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking chrono v0.4.23
[INFO] [stderr]     Checking convert_case v0.6.0
[INFO] [stderr]     Checking rustls-native-certs v0.7.0
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rust-ini v0.19.0
[INFO] [stderr]     Checking typemap-ors v1.0.0
[INFO] [stderr]     Checking serialport v4.2.0
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking thread-id v4.0.0
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.77
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking ipnet v2.5.1
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking base64 v0.22.0
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling jwalk v0.6.0
[INFO] [stderr]    Compiling futures-macro v0.3.25
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling dircpy v0.3.13
[INFO] [stderr]    Compiling zeromq-src v0.2.2+4.3.4
[INFO] [stderr]    Compiling system-deps v6.0.3
[INFO] [stderr]     Checking rustls-webpki v0.102.2
[INFO] [stderr]    Compiling zmq-sys v0.12.0
[INFO] [stderr]    Compiling pest v2.4.1
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]    Compiling pest_meta v2.4.1
[INFO] [stderr]    Compiling pest_generator v2.4.1
[INFO] [stderr]    Compiling pest_derive v2.4.1
[INFO] [stderr]     Checking futures-executor v0.3.25
[INFO] [stderr]     Checking futures v0.3.25
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking serde_spanned v0.6.5
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking toml_edit v0.22.9
[INFO] [stderr]     Checking tokio v1.36.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking ron v0.8.1
[INFO] [stderr]     Checking mio-serial v5.0.3
[INFO] [stderr]     Checking env_logger v0.10.2
[INFO] [stderr]     Checking serde_yaml v0.9.25
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking json5 v0.4.1
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking pretty_env_logger v0.5.0
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking config v0.14.0
[INFO] [stderr]     Checking log4rs v1.3.0
[INFO] [stderr]     Checking tokio-util v0.7.4
[INFO] [stderr]     Checking tower v0.4.13
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-rustls v0.25.0
[INFO] [stderr]     Checking tokio-stream v0.1.11
[INFO] [stderr]     Checking tokio-serial v5.4.4
[INFO] [stderr]     Checking rumqttc v0.24.0
[INFO] [stderr]     Checking tmq v0.4.0
[INFO] [stderr]     Checking h2 v0.4.3
[INFO] [stderr]     Checking hyper v1.2.0
[INFO] [stderr]     Checking hyper-util v0.1.3
[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.1
[INFO] [stderr]     Checking easy_example v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rumqttc` is imported redundantly
[INFO] [stdout]  --> examples/mqtt-asyncpubsub.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rumqttc::{self, AsyncClient, MqttOptions, QoS};
[INFO] [stdout]   |               ^^^^ the item `rumqttc` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `debug`, `error`, `trace`, `warn`
[INFO] [stdout]  --> examples/base64.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use log::{debug, error, info, trace, warn};
[INFO] [stdout]   |           ^^^^^  ^^^^^        ^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `log4rs`
[INFO] [stdout]  --> examples/base64.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `alphabet`, `self`
[INFO] [stdout]  --> examples/base64.rs:4:36
[INFO] [stdout]   |
[INFO] [stdout] 4 | use base64::{Engine as _, engine::{self, general_purpose}, alphabet};
[INFO] [stdout]   |                                    ^^^^                    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/tcp-client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/zeromq-tmq.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/post.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `log4rs` is imported redundantly
[INFO] [stdout]  --> examples/tcp-server.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use log4rs;
[INFO] [stdout]   |     ^^^^^^ the item `log4rs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 25s
[INFO] running `Command { std: "docker" "inspect" "0543d0ce448baa7673a76a7b9086b5d24de9207f08f43839fd76c81b47128091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0543d0ce448baa7673a76a7b9086b5d24de9207f08f43839fd76c81b47128091", kill_on_drop: false }`
[INFO] [stdout] 0543d0ce448baa7673a76a7b9086b5d24de9207f08f43839fd76c81b47128091