[INFO] fetching crate fqdn 0.4.6...
[INFO] testing fqdn-0.4.6 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate fqdn 0.4.6 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate fqdn 0.4.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate fqdn 0.4.6
[INFO] tweaked toml for crates.io crate fqdn 0.4.6 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fqdn 0.4.6 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fqdn 0.4.6 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded punycode v0.4.1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b58c02fe5fe27bbc9dc9ba887398ea712dbe3366eabc93e50e73b7172a30f107
[INFO] running `Command { std: "docker" "start" "-a" "b58c02fe5fe27bbc9dc9ba887398ea712dbe3366eabc93e50e73b7172a30f107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b58c02fe5fe27bbc9dc9ba887398ea712dbe3366eabc93e50e73b7172a30f107", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b58c02fe5fe27bbc9dc9ba887398ea712dbe3366eabc93e50e73b7172a30f107", kill_on_drop: false }`
[INFO] [stdout] b58c02fe5fe27bbc9dc9ba887398ea712dbe3366eabc93e50e73b7172a30f107
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6483eb72089f4ab2afe64b169df19506ab76d5b4559491878497f855c35df72
[INFO] running `Command { std: "docker" "start" "-a" "e6483eb72089f4ab2afe64b169df19506ab76d5b4559491878497f855c35df72", kill_on_drop: false }`
[INFO] [stderr]    Compiling fqdn v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "e6483eb72089f4ab2afe64b169df19506ab76d5b4559491878497f855c35df72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6483eb72089f4ab2afe64b169df19506ab76d5b4559491878497f855c35df72", kill_on_drop: false }`
[INFO] [stdout] e6483eb72089f4ab2afe64b169df19506ab76d5b4559491878497f855c35df72
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f17863d28a60ec881de543ada1e611933b11773da273c2f1c0a16d9bd1c5e5b4
[INFO] running `Command { std: "docker" "start" "-a" "f17863d28a60ec881de543ada1e611933b11773da273c2f1c0a16d9bd1c5e5b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling semver v1.0.24
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]    Compiling cobs v0.2.3
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling postcard v1.1.1
[INFO] [stderr]    Compiling fqdn v0.4.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> examples/x.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     FQDN::try_from(fqdn);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let _ = FQDN::try_from(fqdn);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fqdn` (example "json") due to 1 previous error
[INFO] [stdout] error[E0277]: the trait bound `fqdn::FQDN: serde::de::Deserialize<'_>` is not satisfied
[INFO] [stdout]     --> examples/json.rs:16:30
[INFO] [stdout]      |
[INFO] [stdout]   16 |     let deserialized: FQDN = serde_json::from_str(&serialized).unwrap();
[INFO] [stdout]      |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::de::Deserialize<'_>` is not implemented for `fqdn::FQDN`
[INFO] [stdout]      |
[INFO] [stdout]      = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `fqdn::FQDN` type
[INFO] [stdout]      = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]      = help: the following other types implement trait `serde::de::Deserialize<'de>`:
[INFO] [stdout]                &'a Path
[INFO] [stdout]                &'a [u8]
[INFO] [stdout]                &'a str
[INFO] [stdout]                ()
[INFO] [stdout]                (T,)
[INFO] [stdout]                (T0, T1)
[INFO] [stdout]                (T0, T1, T2)
[INFO] [stdout]                (T0, T1, T2, T3)
[INFO] [stdout]              and 142 others
[INFO] [stdout] note: required by a bound in `serde_json::from_str`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.133/src/de.rs:2694:8
[INFO] [stdout]      |
[INFO] [stdout] 2692 | pub fn from_str<'a, T>(s: &'a str) -> Result<T>
[INFO] [stdout]      |        -------- required by a bound in this function
[INFO] [stdout] 2693 | where
[INFO] [stdout] 2694 |     T: de::Deserialize<'a>,
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^ required by this bound in `from_str`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fqdn` (example "postcard") due to 2 previous errors
[INFO] [stdout] error[E0277]: the trait bound `fqdn::FQDN: serde::ser::Serialize` is not satisfied
[INFO] [stdout]    --> examples/postcard.rs:8:42
[INFO] [stdout]     |
[INFO] [stdout]   8 |     let serialized = postcard::to_stdvec(&fqdn).unwrap();
[INFO] [stdout]     |                      ------------------- ^^^^^ the trait `serde::ser::Serialize` is not implemented for `fqdn::FQDN`
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `fqdn::FQDN` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `serde::ser::Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 134 others
[INFO] [stdout] note: required by a bound in `to_stdvec`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/postcard-1.1.1/src/ser/mod.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub fn to_stdvec<T>(value: &T) -> Result<std::vec::Vec<u8>>
[INFO] [stdout]     |        --------- required by a bound in this function
[INFO] [stdout] 178 | where
[INFO] [stdout] 179 |     T: Serialize + ?Sized,
[INFO] [stdout]     |        ^^^^^^^^^ required by this bound in `to_stdvec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `fqdn::FQDN: serde::de::Deserialize<'_>` is not satisfied
[INFO] [stdout]   --> examples/postcard.rs:14:30
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let deserialized: FQDN = postcard::from_bytes(&serialized).unwrap();
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `serde::de::Deserialize<'_>` is not implemented for `fqdn::FQDN`
[INFO] [stdout]    |
[INFO] [stdout]    = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `fqdn::FQDN` type
[INFO] [stdout]    = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]    = help: the following other types implement trait `serde::de::Deserialize<'de>`:
[INFO] [stdout]              &'a Path
[INFO] [stdout]              &'a [u8]
[INFO] [stdout]              &'a str
[INFO] [stdout]              ()
[INFO] [stdout]              (T,)
[INFO] [stdout]              (T0, T1)
[INFO] [stdout]              (T0, T1, T2)
[INFO] [stdout]              (T0, T1, T2, T3)
[INFO] [stdout]            and 145 others
[INFO] [stdout] note: required by a bound in `postcard::from_bytes`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/postcard-1.1.1/src/de/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn from_bytes<'a, T>(s: &'a [u8]) -> Result<T>
[INFO] [stdout]    |        ---------- required by a bound in this function
[INFO] [stdout] 13 | where
[INFO] [stdout] 14 |     T: Deserialize<'a>,
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^ required by this bound in `from_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f17863d28a60ec881de543ada1e611933b11773da273c2f1c0a16d9bd1c5e5b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f17863d28a60ec881de543ada1e611933b11773da273c2f1c0a16d9bd1c5e5b4", kill_on_drop: false }`
[INFO] [stdout] f17863d28a60ec881de543ada1e611933b11773da273c2f1c0a16d9bd1c5e5b4
