[INFO] fetching crate serde_transmute 0.1.4...
[INFO] testing serde_transmute-0.1.4 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate serde_transmute 0.1.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate serde_transmute 0.1.4
[INFO] finished tweaking crates.io crate serde_transmute 0.1.4
[INFO] tweaked toml for crates.io crate serde_transmute 0.1.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_transmute 0.1.4 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7578634a98f006380b6fdccc9ed06d8cb3f5e08f1d588696d305cd41509abf9
[INFO] running `Command { std: "docker" "start" "-a" "c7578634a98f006380b6fdccc9ed06d8cb3f5e08f1d588696d305cd41509abf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7578634a98f006380b6fdccc9ed06d8cb3f5e08f1d588696d305cd41509abf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7578634a98f006380b6fdccc9ed06d8cb3f5e08f1d588696d305cd41509abf9", kill_on_drop: false }`
[INFO] [stdout] c7578634a98f006380b6fdccc9ed06d8cb3f5e08f1d588696d305cd41509abf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ee3a6527f7ec753e7c7e1cc2ed400cb5d6d12840fb0fa29882307b18907837a
[INFO] running `Command { std: "docker" "start" "-a" "7ee3a6527f7ec753e7c7e1cc2ed400cb5d6d12840fb0fa29882307b18907837a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_transmute v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:52:37
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variants`
[INFO] [stdout]    --> src/lib.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         variants: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:483:9
[INFO] [stdout]     |
[INFO] [stdout] 483 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/lib.rs:515:9
[INFO] [stdout]     |
[INFO] [stdout] 515 |         fields: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1015:9
[INFO] [stdout]      |
[INFO] [stdout] 1014 |     UnitStruct {
[INFO] [stdout]      |     ---------- field in this variant
[INFO] [stdout] 1015 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1018:9
[INFO] [stdout]      |
[INFO] [stdout] 1017 |     UnitVariant {
[INFO] [stdout]      |     ----------- field in this variant
[INFO] [stdout] 1018 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1023:9
[INFO] [stdout]      |
[INFO] [stdout] 1022 |     NewtypeStruct {
[INFO] [stdout]      |     ------------- field in this variant
[INFO] [stdout] 1023 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1027:9
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     NewtypeVariant {
[INFO] [stdout]      |     -------------- field in this variant
[INFO] [stdout] 1027 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1035:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     TupleStruct {
[INFO] [stdout]      |     ----------- field in this variant
[INFO] [stdout] 1035 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1039:9
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     TupleVariant {
[INFO] [stdout]      |     ------------ field in this variant
[INFO] [stdout] 1039 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1047:9
[INFO] [stdout]      |
[INFO] [stdout] 1046 |     Struct {
[INFO] [stdout]      |     ------ field in this variant
[INFO] [stdout] 1047 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1051:9
[INFO] [stdout]      |
[INFO] [stdout] 1050 |     StructVariant {
[INFO] [stdout]      |     ------------- field in this variant
[INFO] [stdout] 1051 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "7ee3a6527f7ec753e7c7e1cc2ed400cb5d6d12840fb0fa29882307b18907837a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee3a6527f7ec753e7c7e1cc2ed400cb5d6d12840fb0fa29882307b18907837a", kill_on_drop: false }`
[INFO] [stdout] 7ee3a6527f7ec753e7c7e1cc2ed400cb5d6d12840fb0fa29882307b18907837a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77847422b25da6bb61bb587db91f68955f6fea9a9ef32235168bdf34c481da43
[INFO] running `Command { std: "docker" "start" "-a" "77847422b25da6bb61bb587db91f68955f6fea9a9ef32235168bdf34c481da43", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_transmute v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:52:37
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variants`
[INFO] [stdout]    --> src/lib.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         variants: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:483:9
[INFO] [stdout]     |
[INFO] [stdout] 483 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/lib.rs:515:9
[INFO] [stdout]     |
[INFO] [stdout] 515 |         fields: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1015:9
[INFO] [stdout]      |
[INFO] [stdout] 1014 |     UnitStruct {
[INFO] [stdout]      |     ---------- field in this variant
[INFO] [stdout] 1015 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1018:9
[INFO] [stdout]      |
[INFO] [stdout] 1017 |     UnitVariant {
[INFO] [stdout]      |     ----------- field in this variant
[INFO] [stdout] 1018 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1023:9
[INFO] [stdout]      |
[INFO] [stdout] 1022 |     NewtypeStruct {
[INFO] [stdout]      |     ------------- field in this variant
[INFO] [stdout] 1023 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1027:9
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     NewtypeVariant {
[INFO] [stdout]      |     -------------- field in this variant
[INFO] [stdout] 1027 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1035:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     TupleStruct {
[INFO] [stdout]      |     ----------- field in this variant
[INFO] [stdout] 1035 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1039:9
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     TupleVariant {
[INFO] [stdout]      |     ------------ field in this variant
[INFO] [stdout] 1039 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1047:9
[INFO] [stdout]      |
[INFO] [stdout] 1046 |     Struct {
[INFO] [stdout]      |     ------ field in this variant
[INFO] [stdout] 1047 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1051:9
[INFO] [stdout]      |
[INFO] [stdout] 1050 |     StructVariant {
[INFO] [stdout]      |     ------------- field in this variant
[INFO] [stdout] 1051 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]   --> src/lib.rs:42:19
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:52:37
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/lib.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stdout]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/lib.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variants`
[INFO] [stdout]    --> src/lib.rs:224:9
[INFO] [stdout]     |
[INFO] [stdout] 224 |         variants: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/lib.rs:483:9
[INFO] [stdout]     |
[INFO] [stdout] 483 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/lib.rs:515:9
[INFO] [stdout]     |
[INFO] [stdout] 515 |         fields: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1015:9
[INFO] [stdout]      |
[INFO] [stdout] 1014 |     UnitStruct {
[INFO] [stdout]      |     ---------- field in this variant
[INFO] [stdout] 1015 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1018:9
[INFO] [stdout]      |
[INFO] [stdout] 1017 |     UnitVariant {
[INFO] [stdout]      |     ----------- field in this variant
[INFO] [stdout] 1018 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1023:9
[INFO] [stdout]      |
[INFO] [stdout] 1022 |     NewtypeStruct {
[INFO] [stdout]      |     ------------- field in this variant
[INFO] [stdout] 1023 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1027:9
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     NewtypeVariant {
[INFO] [stdout]      |     -------------- field in this variant
[INFO] [stdout] 1027 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1035:9
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     TupleStruct {
[INFO] [stdout]      |     ----------- field in this variant
[INFO] [stdout] 1035 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1039:9
[INFO] [stdout]      |
[INFO] [stdout] 1038 |     TupleVariant {
[INFO] [stdout]      |     ------------ field in this variant
[INFO] [stdout] 1039 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1047:9
[INFO] [stdout]      |
[INFO] [stdout] 1046 |     Struct {
[INFO] [stdout]      |     ------ field in this variant
[INFO] [stdout] 1047 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]     --> src/lib.rs:1051:9
[INFO] [stdout]      |
[INFO] [stdout] 1050 |     StructVariant {
[INFO] [stdout]      |     ------------- field in this variant
[INFO] [stdout] 1051 |         name: &'static str,
[INFO] [stdout]      |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "77847422b25da6bb61bb587db91f68955f6fea9a9ef32235168bdf34c481da43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77847422b25da6bb61bb587db91f68955f6fea9a9ef32235168bdf34c481da43", kill_on_drop: false }`
[INFO] [stdout] 77847422b25da6bb61bb587db91f68955f6fea9a9ef32235168bdf34c481da43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3511986094b63205c4eab07791b8b8a4eab037f4faf09a4a89b53656bc6a3bd4
[INFO] running `Command { std: "docker" "start" "-a" "3511986094b63205c4eab07791b8b8a4eab037f4faf09a4a89b53656bc6a3bd4", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:42:19
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
[INFO] [stderr]    |                   ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/lib.rs:52:37
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stderr]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/lib.rs:59:37
[INFO] [stderr]    |
[INFO] [stderr] 59 |     fn custom<T: std::fmt::Display>(t: T) -> Self {
[INFO] [stderr]    |                                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/lib.rs:223:9
[INFO] [stderr]     |
[INFO] [stderr] 223 |         name: &'static str,
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `variants`
[INFO] [stderr]    --> src/lib.rs:224:9
[INFO] [stderr]     |
[INFO] [stderr] 224 |         variants: &'static [&'static str],
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/lib.rs:483:9
[INFO] [stderr]     |
[INFO] [stderr] 483 |         len: usize,
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fields`
[INFO] [stderr]    --> src/lib.rs:515:9
[INFO] [stderr]     |
[INFO] [stderr] 515 |         fields: &'static [&'static str],
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1015:9
[INFO] [stderr]      |
[INFO] [stderr] 1014 |     UnitStruct {
[INFO] [stderr]      |     ---------- field in this variant
[INFO] [stderr] 1015 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1018:9
[INFO] [stderr]      |
[INFO] [stderr] 1017 |     UnitVariant {
[INFO] [stderr]      |     ----------- field in this variant
[INFO] [stderr] 1018 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1023:9
[INFO] [stderr]      |
[INFO] [stderr] 1022 |     NewtypeStruct {
[INFO] [stderr]      |     ------------- field in this variant
[INFO] [stderr] 1023 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1027:9
[INFO] [stderr]      |
[INFO] [stderr] 1026 |     NewtypeVariant {
[INFO] [stderr]      |     -------------- field in this variant
[INFO] [stderr] 1027 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1035:9
[INFO] [stderr]      |
[INFO] [stderr] 1034 |     TupleStruct {
[INFO] [stderr]      |     ----------- field in this variant
[INFO] [stderr] 1035 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1039:9
[INFO] [stderr]      |
[INFO] [stderr] 1038 |     TupleVariant {
[INFO] [stderr]      |     ------------ field in this variant
[INFO] [stderr] 1039 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1047:9
[INFO] [stderr]      |
[INFO] [stderr] 1046 |     Struct {
[INFO] [stderr]      |     ------ field in this variant
[INFO] [stderr] 1047 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `name` is never read
[INFO] [stderr]     --> src/lib.rs:1051:9
[INFO] [stderr]      |
[INFO] [stderr] 1050 |     StructVariant {
[INFO] [stderr]      |     ------------- field in this variant
[INFO] [stderr] 1051 |         name: &'static str,
[INFO] [stderr]      |         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `serde_transmute` (lib) generated 15 warnings
[INFO] [stderr] warning: `serde_transmute` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_transmute-9929d1906b5a1051)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/foobar.rs (/opt/rustwide/target/debug/deps/foobar-ea4b0876ae99691a)
[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 1 test
[INFO] [stdout] test transmute ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/unit.rs (/opt/rustwide/target/debug/deps/unit-c40c716b31ea2aad)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test transmute ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests serde_transmute
[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" "3511986094b63205c4eab07791b8b8a4eab037f4faf09a4a89b53656bc6a3bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3511986094b63205c4eab07791b8b8a4eab037f4faf09a4a89b53656bc6a3bd4", kill_on_drop: false }`
[INFO] [stdout] 3511986094b63205c4eab07791b8b8a4eab037f4faf09a4a89b53656bc6a3bd4