[INFO] cloning repository https://github.com/nmoutschen/rust-async
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nmoutschen/rust-async" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnmoutschen%2Frust-async", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnmoutschen%2Frust-async'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5965182b0405d139332b3dd56674add9bfecb08f
[INFO] checking nmoutschen/rust-async against try#438eb4c1a1c3841523d7f672601e8adbe04cff28 for pr-147589-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnmoutschen%2Frust-async" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nmoutschen/rust-async
[INFO] finished tweaking git repo https://github.com/nmoutschen/rust-async
[INFO] tweaked toml for git repo https://github.com/nmoutschen/rust-async written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nmoutschen/rust-async on toolchain 438eb4c1a1c3841523d7f672601e8adbe04cff28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nmoutschen/rust-async 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" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1eceb3306f3543465795ce74e4339bc8d35f2d5cd4c3f908d80c057ebb54030c
[INFO] running `Command { std: "docker" "start" "-a" "1eceb3306f3543465795ce74e4339bc8d35f2d5cd4c3f908d80c057ebb54030c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eceb3306f3543465795ce74e4339bc8d35f2d5cd4c3f908d80c057ebb54030c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eceb3306f3543465795ce74e4339bc8d35f2d5cd4c3f908d80c057ebb54030c", kill_on_drop: false }`
[INFO] [stdout] 1eceb3306f3543465795ce74e4339bc8d35f2d5cd4c3f908d80c057ebb54030c
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+438eb4c1a1c3841523d7f672601e8adbe04cff28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed6c1c2731e930c32064dc42f2f4395012cb5d0258f8a1058e7c0439214c2112
[INFO] running `Command { std: "docker" "start" "-a" "ed6c1c2731e930c32064dc42f2f4395012cb5d0258f8a1058e7c0439214c2112", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking tower-layer v0.3.1
[INFO] [stderr]    Compiling semver v1.0.5
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]     Checking num_threads v0.1.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking time v0.3.7
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking aws-smithy-types v0.36.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking hdrhistogram v6.3.4
[INFO] [stderr]     Checking zeroize v1.5.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling aws-types v0.6.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking xmlparser v0.13.3
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking urlencoding v1.3.3
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking aws-smithy-query v0.36.0
[INFO] [stderr]     Checking aws-smithy-json v0.36.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking is_ci v1.1.1
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking ct-logs v0.8.0
[INFO] [stderr]     Checking supports-color v1.3.0
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking supports-hyperlinks v1.2.0
[INFO] [stderr]     Checking supports-unicode v1.0.2
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking owo-colors v3.3.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]     Checking bench-vecmap v0.1.0 (/opt/rustwide/workdir/bench-vecmap)
[INFO] [stderr]     Checking option-mapping v0.1.0 (/opt/rustwide/workdir/option-mapping)
[INFO] [stderr]     Checking safety-option-npo v0.1.0 (/opt/rustwide/workdir/safety-option-npo)
[INFO] [stderr]     Checking deref-pizza v0.1.0 (/opt/rustwide/workdir/deref-pizza)
[INFO] [stderr]     Checking enum-use v0.1.0 (/opt/rustwide/workdir/enum-use)
[INFO] [stderr]     Checking rustls-native-certs v0.5.0
[INFO] [stderr]     Checking probability v0.1.0 (/opt/rustwide/workdir/probability)
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.19
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]    Compiling miette-derive v4.3.0
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking aws-smithy-xml v0.36.0
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking tracing v0.1.30
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking miette v4.3.0
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking query_map v0.4.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking aws-smithy-eventstream v0.36.0
[INFO] [stderr]     Checking bytes-utils v0.1.1
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking test-random-json v0.1.0 (/opt/rustwide/workdir/test-random-json)
[INFO] [stderr]     Checking error-serde v0.1.0 (/opt/rustwide/workdir/error-serde)
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> error-serde/src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     src: NamedSource,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad_bit` is never read
[INFO] [stdout]   --> error-serde/src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     bad_bit: SourceSpan,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `msg` is never read
[INFO] [stdout]   --> error-serde/src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     msg: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> error-serde/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MyData {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 8 |     name: String,
[INFO] [stdout] 9 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stdout] warning: value assigned to `src` is never read
[INFO] [stdout]   --> error-serde/src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     src: NamedSource,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `bad_bit` is never read
[INFO] [stdout]   --> error-serde/src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     bad_bit: SourceSpan,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `msg` is never read
[INFO] [stdout]   --> error-serde/src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     msg: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> error-serde/src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct MyData {
[INFO] [stdout]   |        ------ field in this struct
[INFO] [stdout] 8 |     name: String,
[INFO] [stdout] 9 |     age: usize,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking http-serde v1.1.0
[INFO] [stderr]     Checking aws_lambda_events v0.6.1
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking tokio-rustls v0.22.0
[INFO] [stderr]     Checking async-compression v0.3.12
[INFO] [stderr]     Checking tokio-util v0.7.0
[INFO] [stderr]     Checking async-simple v0.1.0 (/opt/rustwide/workdir/async-simple)
[INFO] [stderr]     Checking aws-smithy-async v0.36.0
[INFO] [stderr]     Checking csv-async v1.2.4
[INFO] [stderr]     Checking h2 v0.3.11
[INFO] [stderr]     Checking tower v0.4.11
[INFO] [stderr]     Checking tower-fault-injector v0.0.2
[INFO] [stderr]     Checking async-service v0.1.0 (/opt/rustwide/workdir/async-service)
[INFO] [stderr]     Checking async-post-wrapper v0.1.0 (/opt/rustwide/workdir/async-post-wrapper)
[INFO] [stderr]     Checking async-service-wrapper v0.1.0 (/opt/rustwide/workdir/async-service-wrapper)
[INFO] [stderr]     Checking hyper v0.14.17
[INFO] [stdout] error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/hyper-0.14.17/src/proto/h2/mod.rs:452:5
[INFO] [stdout]     |
[INFO] [stdout] 452 |     impossible: Impossible,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this field contains `Impossible`, which is not inhabited, and makes it not a breaking change to become non-zero-sized in the future.
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hyper` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "ed6c1c2731e930c32064dc42f2f4395012cb5d0258f8a1058e7c0439214c2112", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed6c1c2731e930c32064dc42f2f4395012cb5d0258f8a1058e7c0439214c2112", kill_on_drop: false }`
[INFO] [stdout] ed6c1c2731e930c32064dc42f2f4395012cb5d0258f8a1058e7c0439214c2112
