[INFO] fetching crate serde_epee 0.1.0...
[INFO] testing serde_epee-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate serde_epee 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate serde_epee 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_epee 0.1.0
[INFO] finished tweaking crates.io crate serde_epee 0.1.0
[INFO] tweaked toml for crates.io crate serde_epee 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate serde_epee 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95f91082b1cc4c6aba6e4fd0611a3d7200a945d2341ff795a1fc445fdbf3e639
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "95f91082b1cc4c6aba6e4fd0611a3d7200a945d2341ff795a1fc445fdbf3e639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95f91082b1cc4c6aba6e4fd0611a3d7200a945d2341ff795a1fc445fdbf3e639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95f91082b1cc4c6aba6e4fd0611a3d7200a945d2341ff795a1fc445fdbf3e639", kill_on_drop: false }`
[INFO] [stdout] 95f91082b1cc4c6aba6e4fd0611a3d7200a945d2341ff795a1fc445fdbf3e639
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0d691006d3bdfe7a091a4b7fb2d9e82f8dc7c0d1f774d3ef8a0f2b1495f91b60
[INFO] running `Command { std: "docker" "start" "-a" "0d691006d3bdfe7a091a4b7fb2d9e82f8dc7c0d1f774d3ef8a0f2b1495f91b60", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling serde_epee v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `EnumAccess`, `IntoDeserializer`, `VariantAccess`
[INFO] [stdout]  --> src/de.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess,
[INFO] [stdout]   |                            ^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     VariantAccess, Visitor,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:220:3
[INFO] [stdout]     |
[INFO] [stdout] 220 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:231:3
[INFO] [stdout]     |
[INFO] [stdout] 231 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:312:3
[INFO] [stdout]     |
[INFO] [stdout] 312 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `type_code`
[INFO] [stdout]    --> src/de.rs:338:2
[INFO] [stdout]     |
[INFO] [stdout] 338 |     type_code: u8
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREA`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const PORTABLE_STORAGE_SIGNATUREA: u32 = 0x01011101;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREB`
[INFO] [stdout]  --> src/constants.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub const PORTABLE_STORAGE_SIGNATUREB: u32 = 0x01020101;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_FORMAT_VER`
[INFO] [stdout]  --> src/constants.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const PORTABLE_STORAGE_FORMAT_VER: u8 = 0x01;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_STRING_BUFFER_SIZE`
[INFO] [stdout]   --> src/constants.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const MAX_STRING_BUFFER_SIZE:usize = 4096; // In order to prevent memory allocation spam
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.62s
[INFO] running `Command { std: "docker" "inspect" "0d691006d3bdfe7a091a4b7fb2d9e82f8dc7c0d1f774d3ef8a0f2b1495f91b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d691006d3bdfe7a091a4b7fb2d9e82f8dc7c0d1f774d3ef8a0f2b1495f91b60", kill_on_drop: false }`
[INFO] [stdout] 0d691006d3bdfe7a091a4b7fb2d9e82f8dc7c0d1f774d3ef8a0f2b1495f91b60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4f9a6cfa39a62ef1adbedecce4e8cd922228ce8c7f789a8db255fe05cf5861b6
[INFO] running `Command { std: "docker" "start" "-a" "4f9a6cfa39a62ef1adbedecce4e8cd922228ce8c7f789a8db255fe05cf5861b6", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde_epee v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `EnumAccess`, `IntoDeserializer`, `VariantAccess`
[INFO] [stdout]  --> src/de.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess,
[INFO] [stdout]   |                            ^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     VariantAccess, Visitor,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:220:3
[INFO] [stdout]     |
[INFO] [stdout] 220 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:231:3
[INFO] [stdout]     |
[INFO] [stdout] 231 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:312:3
[INFO] [stdout]     |
[INFO] [stdout] 312 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `type_code`
[INFO] [stdout]    --> src/de.rs:338:2
[INFO] [stdout]     |
[INFO] [stdout] 338 |     type_code: u8
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREA`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const PORTABLE_STORAGE_SIGNATUREA: u32 = 0x01011101;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREB`
[INFO] [stdout]  --> src/constants.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub const PORTABLE_STORAGE_SIGNATUREB: u32 = 0x01020101;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_FORMAT_VER`
[INFO] [stdout]  --> src/constants.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const PORTABLE_STORAGE_FORMAT_VER: u8 = 0x01;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_STRING_BUFFER_SIZE`
[INFO] [stdout]   --> src/constants.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const MAX_STRING_BUFFER_SIZE:usize = 4096; // In order to prevent memory allocation spam
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EnumAccess`, `IntoDeserializer`, `VariantAccess`
[INFO] [stdout]  --> src/de.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 |     self, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess,
[INFO] [stdout]   |                            ^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     VariantAccess, Visitor,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:210:31
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:220:3
[INFO] [stdout]     |
[INFO] [stdout] 220 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:231:3
[INFO] [stdout]     |
[INFO] [stdout] 231 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:289:30
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/de.rs:312:3
[INFO] [stdout]     |
[INFO] [stdout] 312 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `type_code`
[INFO] [stdout]    --> src/de.rs:338:2
[INFO] [stdout]     |
[INFO] [stdout] 338 |     type_code: u8
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREA`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const PORTABLE_STORAGE_SIGNATUREA: u32 = 0x01011101;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREB`
[INFO] [stdout]  --> src/constants.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub const PORTABLE_STORAGE_SIGNATUREB: u32 = 0x01020101;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PORTABLE_STORAGE_FORMAT_VER`
[INFO] [stdout]  --> src/constants.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const PORTABLE_STORAGE_FORMAT_VER: u8 = 0x01;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_STRING_BUFFER_SIZE`
[INFO] [stdout]   --> src/constants.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const MAX_STRING_BUFFER_SIZE:usize = 4096; // In order to prevent memory allocation spam
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.97s
[INFO] running `Command { std: "docker" "inspect" "4f9a6cfa39a62ef1adbedecce4e8cd922228ce8c7f789a8db255fe05cf5861b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f9a6cfa39a62ef1adbedecce4e8cd922228ce8c7f789a8db255fe05cf5861b6", kill_on_drop: false }`
[INFO] [stdout] 4f9a6cfa39a62ef1adbedecce4e8cd922228ce8c7f789a8db255fe05cf5861b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2919da0f72cdfb7d2e36c656b242d67337d0873575d31587155b51cfc0379a45
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2919da0f72cdfb7d2e36c656b242d67337d0873575d31587155b51cfc0379a45", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr] warning: unused imports: `EnumAccess`, `IntoDeserializer`, `VariantAccess`
[INFO] [stderr]  --> src/de.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 |     self, DeserializeSeed, EnumAccess, IntoDeserializer, MapAccess, SeqAccess,
[INFO] [stderr]   |                            ^^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stderr] 6 |     VariantAccess, Visitor,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]    --> src/de.rs:103:30
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stderr]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]    --> src/de.rs:210:31
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stderr]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]    --> src/de.rs:220:3
[INFO] [stderr]     |
[INFO] [stderr] 220 |         visitor: V,
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]    --> src/de.rs:231:3
[INFO] [stderr]     |
[INFO] [stderr] 231 |         visitor: V,
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]    --> src/de.rs:289:30
[INFO] [stderr]     |
[INFO] [stderr] 289 |     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stderr]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `visitor`
[INFO] [stderr]    --> src/de.rs:312:3
[INFO] [stderr]     |
[INFO] [stderr] 312 |         visitor: V,
[INFO] [stderr]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `type_code`
[INFO] [stderr]    --> src/de.rs:338:2
[INFO] [stderr]     |
[INFO] [stderr] 338 |     type_code: u8
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREA`
[INFO] [stderr]  --> src/constants.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub const PORTABLE_STORAGE_SIGNATUREA: u32 = 0x01011101;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PORTABLE_STORAGE_SIGNATUREB`
[INFO] [stderr]  --> src/constants.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub const PORTABLE_STORAGE_SIGNATUREB: u32 = 0x01020101;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PORTABLE_STORAGE_FORMAT_VER`
[INFO] [stderr]  --> src/constants.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub const PORTABLE_STORAGE_FORMAT_VER: u8 = 0x01;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `MAX_STRING_BUFFER_SIZE`
[INFO] [stderr]   --> src/constants.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub const MAX_STRING_BUFFER_SIZE:usize = 4096; // In order to prevent memory allocation spam
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `serde_epee` (lib) generated 12 warnings
[INFO] [stderr] warning: `serde_epee` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_epee-4572c3cadbb709dd)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/serde_epee-8f6c0358250413ba)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_epee
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2919da0f72cdfb7d2e36c656b242d67337d0873575d31587155b51cfc0379a45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2919da0f72cdfb7d2e36c656b242d67337d0873575d31587155b51cfc0379a45", kill_on_drop: false }`
[INFO] [stdout] 2919da0f72cdfb7d2e36c656b242d67337d0873575d31587155b51cfc0379a45