[INFO] fetching crate maybe-multiple 0.1.0... [INFO] testing maybe-multiple-0.1.0 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate maybe-multiple 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate maybe-multiple 0.1.0 [INFO] finished tweaking crates.io crate maybe-multiple 0.1.0 [INFO] tweaked toml for crates.io crate maybe-multiple 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate maybe-multiple 0.1.0 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 53 packages to latest compatible versions [INFO] [stderr] Adding thiserror v1.0.69 (available: v2.0.17) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8547346d5bad177a1a7ca8ee62f010dffd68ee0bc8b17a685996fdbe89f325b3 [INFO] running `Command { std: "docker" "start" "-a" "8547346d5bad177a1a7ca8ee62f010dffd68ee0bc8b17a685996fdbe89f325b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8547346d5bad177a1a7ca8ee62f010dffd68ee0bc8b17a685996fdbe89f325b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8547346d5bad177a1a7ca8ee62f010dffd68ee0bc8b17a685996fdbe89f325b3", kill_on_drop: false }` [INFO] [stdout] 8547346d5bad177a1a7ca8ee62f010dffd68ee0bc8b17a685996fdbe89f325b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 58361cd138b83d26b923a1701ed98161cb384aa43b18810eb97fd23e048b749f [INFO] running `Command { std: "docker" "start" "-a" "58361cd138b83d26b923a1701ed98161cb384aa43b18810eb97fd23e048b749f", kill_on_drop: false }` [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling maybe-multiple v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.70s [INFO] running `Command { std: "docker" "inspect" "58361cd138b83d26b923a1701ed98161cb384aa43b18810eb97fd23e048b749f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58361cd138b83d26b923a1701ed98161cb384aa43b18810eb97fd23e048b749f", kill_on_drop: false }` [INFO] [stdout] 58361cd138b83d26b923a1701ed98161cb384aa43b18810eb97fd23e048b749f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a822b3aacf3051c8260863e80ce76a4ebd2b47d4e5063f03bfdc2e4cd9790680 [INFO] running `Command { std: "docker" "start" "-a" "a822b3aacf3051c8260863e80ce76a4ebd2b47d4e5063f03bfdc2e4cd9790680", kill_on_drop: false }` [INFO] [stderr] Compiling getrandom v0.3.4 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling bit-vec v0.8.0 [INFO] [stderr] Compiling unarray v0.1.4 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling wait-timeout v0.2.1 [INFO] [stderr] Compiling ppv-lite86 v0.2.21 [INFO] [stderr] Compiling bit-set v0.8.0 [INFO] [stderr] Compiling rand_core v0.9.3 [INFO] [stderr] Compiling tempfile v3.23.0 [INFO] [stderr] Compiling rand v0.9.2 [INFO] [stderr] Compiling rand_xorshift v0.4.0 [INFO] [stderr] Compiling rand_chacha v0.9.0 [INFO] [stderr] Compiling rusty-fork v0.3.1 [INFO] [stderr] Compiling proptest v1.9.0 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling structmeta-derive v0.3.0 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling structmeta v0.3.0 [INFO] [stderr] Compiling maybe-multiple v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Compiling derive-ex v0.1.8 [INFO] [stderr] Compiling test-strategy v0.4.3 [INFO] [stdout] error[E0277]: the trait bound `MaybeMultiple: serde::Serialize` is not satisfied [INFO] [stdout] --> src/maybe_multiple.rs:111:35 [INFO] [stdout] | [INFO] [stdout] 111 | serde_json::to_string(&MaybeMultiple::::None).unwrap(), [INFO] [stdout] | --------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | | [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::ser::Serialize` is not implemented for `MaybeMultiple` [INFO] [stdout] --> src/maybe_multiple.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | pub enum MaybeMultiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Serialize)]` to your `MaybeMultiple` 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_core::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 128 others [INFO] [stdout] note: required by a bound in `serde_json::to_string` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.145/src/ser.rs:2247:17 [INFO] [stdout] | [INFO] [stdout] 2245 | pub fn to_string(value: &T) -> Result [INFO] [stdout] | --------- required by a bound in this function [INFO] [stdout] 2246 | where [INFO] [stdout] 2247 | T: ?Sized + Serialize, [INFO] [stdout] | ^^^^^^^^^ required by this bound in `to_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `MaybeMultiple: serde::Deserialize<'de>` is not satisfied [INFO] [stdout] --> src/maybe_multiple.rs:115:36 [INFO] [stdout] | [INFO] [stdout] 115 | serde_json::from_str::>("null").unwrap(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::de::Deserialize<'_>` is not implemented for `MaybeMultiple` [INFO] [stdout] --> src/maybe_multiple.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | pub enum MaybeMultiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `MaybeMultiple` 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_core::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 140 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-1.0.145/src/de.rs:2699:8 [INFO] [stdout] | [INFO] [stdout] 2697 | pub fn from_str<'a, T>(s: &'a str) -> Result [INFO] [stdout] | -------- required by a bound in this function [INFO] [stdout] 2698 | where [INFO] [stdout] 2699 | T: de::Deserialize<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ required by this bound in `from_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `MaybeMultiple: serde::Serialize` is not satisfied [INFO] [stdout] --> src/maybe_multiple.rs:124:35 [INFO] [stdout] | [INFO] [stdout] 124 | serde_json::to_string(&maybe_multiple).unwrap(), [INFO] [stdout] | --------------------- ^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | | [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::ser::Serialize` is not implemented for `MaybeMultiple` [INFO] [stdout] --> src/maybe_multiple.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | pub enum MaybeMultiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Serialize)]` to your `MaybeMultiple` 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_core::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 128 others [INFO] [stdout] note: required by a bound in `serde_json::to_string` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.145/src/ser.rs:2247:17 [INFO] [stdout] | [INFO] [stdout] 2245 | pub fn to_string(value: &T) -> Result [INFO] [stdout] | --------- required by a bound in this function [INFO] [stdout] 2246 | where [INFO] [stdout] 2247 | T: ?Sized + Serialize, [INFO] [stdout] | ^^^^^^^^^ required by this bound in `to_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `MaybeMultiple<_>: serde::Deserialize<'de>` is not satisfied [INFO] [stdout] --> src/maybe_multiple.rs:130:36 [INFO] [stdout] | [INFO] [stdout] 130 | serde_json::from_str::>(&val_str).unwrap(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::de::Deserialize<'_>` is not implemented for `MaybeMultiple<_>` [INFO] [stdout] --> src/maybe_multiple.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | pub enum MaybeMultiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `MaybeMultiple<_>` 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_core::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 140 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-1.0.145/src/de.rs:2699:8 [INFO] [stdout] | [INFO] [stdout] 2697 | pub fn from_str<'a, T>(s: &'a str) -> Result [INFO] [stdout] | -------- required by a bound in this function [INFO] [stdout] 2698 | where [INFO] [stdout] 2699 | T: de::Deserialize<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ required by this bound in `from_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `MaybeMultiple: serde::Serialize` is not satisfied [INFO] [stdout] --> src/maybe_multiple.rs:139:35 [INFO] [stdout] | [INFO] [stdout] 139 | serde_json::to_string(&maybe_multiple).unwrap(), [INFO] [stdout] | --------------------- ^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | | [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::ser::Serialize` is not implemented for `MaybeMultiple` [INFO] [stdout] --> src/maybe_multiple.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | pub enum MaybeMultiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Serialize)]` to your `MaybeMultiple` 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_core::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 128 others [INFO] [stdout] note: required by a bound in `serde_json::to_string` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.145/src/ser.rs:2247:17 [INFO] [stdout] | [INFO] [stdout] 2245 | pub fn to_string(value: &T) -> Result [INFO] [stdout] | --------- required by a bound in this function [INFO] [stdout] 2246 | where [INFO] [stdout] 2247 | T: ?Sized + Serialize, [INFO] [stdout] | ^^^^^^^^^ required by this bound in `to_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `MaybeMultiple<_>: serde::Deserialize<'de>` is not satisfied [INFO] [stdout] --> src/maybe_multiple.rs:145:36 [INFO] [stdout] | [INFO] [stdout] 145 | serde_json::from_str::>(&vec_str).unwrap(), [INFO] [stdout] | ^^^^^^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::de::Deserialize<'_>` is not implemented for `MaybeMultiple<_>` [INFO] [stdout] --> src/maybe_multiple.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | pub enum MaybeMultiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `MaybeMultiple<_>` 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_core::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 140 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-1.0.145/src/de.rs:2699:8 [INFO] [stdout] | [INFO] [stdout] 2697 | pub fn from_str<'a, T>(s: &'a str) -> Result [INFO] [stdout] | -------- required by a bound in this function [INFO] [stdout] 2698 | where [INFO] [stdout] 2699 | T: de::Deserialize<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ required by this bound in `from_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `Multiple: serde::Serialize` is not satisfied [INFO] [stdout] --> src/multiple.rs:132:35 [INFO] [stdout] | [INFO] [stdout] 132 | serde_json::to_string(&multiple).unwrap(), [INFO] [stdout] | --------------------- ^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | | [INFO] [stdout] | required by a bound introduced by this call [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::ser::Serialize` is not implemented for `Multiple` [INFO] [stdout] --> src/multiple.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | pub struct Multiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Multiple` 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_core::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 128 others [INFO] [stdout] note: required by a bound in `serde_json::to_string` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.145/src/ser.rs:2247:17 [INFO] [stdout] | [INFO] [stdout] 2245 | pub fn to_string(value: &T) -> Result [INFO] [stdout] | --------- required by a bound in this function [INFO] [stdout] 2246 | where [INFO] [stdout] 2247 | T: ?Sized + Serialize, [INFO] [stdout] | ^^^^^^^^^ required by this bound in `to_string` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the trait bound `Multiple<_>: serde::Deserialize<'de>` is not satisfied [INFO] [stdout] --> src/multiple.rs:138:36 [INFO] [stdout] | [INFO] [stdout] 138 | serde_json::from_str::>(&vec_str).unwrap(), [INFO] [stdout] | ^^^^^^^^^^^ unsatisfied trait bound [INFO] [stdout] | [INFO] [stdout] help: the trait `serde_core::de::Deserialize<'_>` is not implemented for `Multiple<_>` [INFO] [stdout] --> src/multiple.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | pub struct Multiple { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] = note: for local types consider adding `#[derive(serde::Deserialize)]` to your `Multiple<_>` 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_core::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 140 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-1.0.145/src/de.rs:2699:8 [INFO] [stdout] | [INFO] [stdout] 2697 | pub fn from_str<'a, T>(s: &'a str) -> Result [INFO] [stdout] | -------- required by a bound in this function [INFO] [stdout] 2698 | where [INFO] [stdout] 2699 | T: de::Deserialize<'a>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ required by this bound in `from_str` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `maybe-multiple` (lib test) due to 8 previous errors [INFO] running `Command { std: "docker" "inspect" "a822b3aacf3051c8260863e80ce76a4ebd2b47d4e5063f03bfdc2e4cd9790680", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a822b3aacf3051c8260863e80ce76a4ebd2b47d4e5063f03bfdc2e4cd9790680", kill_on_drop: false }` [INFO] [stdout] a822b3aacf3051c8260863e80ce76a4ebd2b47d4e5063f03bfdc2e4cd9790680