[INFO] fetching crate tiny-multihash-proc-macro 0.1.0...
[INFO] building tiny-multihash-proc-macro-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate tiny-multihash-proc-macro 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate tiny-multihash-proc-macro 0.1.0
[INFO] finished tweaking crates.io crate tiny-multihash-proc-macro 0.1.0
[INFO] tweaked toml for crates.io crate tiny-multihash-proc-macro 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tiny-multihash-proc-macro 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding pretty_assertions v0.6.1 (available: v1.4.1)
[INFO] [stderr]       Adding proc-macro-crate v0.1.5 (available: v3.4.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.13.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6df445d16e7871fc02e69022a6f1c3b0b7c3428ac439c0d3826839dcfd4b5372
[INFO] running `Command { std: "docker" "start" "-a" "6df445d16e7871fc02e69022a6f1c3b0b7c3428ac439c0d3826839dcfd4b5372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6df445d16e7871fc02e69022a6f1c3b0b7c3428ac439c0d3826839dcfd4b5372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6df445d16e7871fc02e69022a6f1c3b0b7c3428ac439c0d3826839dcfd4b5372", kill_on_drop: false }`
[INFO] [stdout] 6df445d16e7871fc02e69022a6f1c3b0b7c3428ac439c0d3826839dcfd4b5372
[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=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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3529e1844835f682edfa2cea7ee941987a9024fb1a843ad063f6b4dd2eb4f203
[INFO] running `Command { std: "docker" "start" "-a" "3529e1844835f682edfa2cea7ee941987a9024fb1a843ad063f6b4dd2eb4f203", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling tiny-multihash-proc-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]   --> src/utils.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Attrs<A> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub paren: syn::token::Paren,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `eq` are never read
[INFO] [stdout]   --> src/utils.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Attr<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 27 |     pub key: K,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 28 |     pub eq: syn::token::Eq,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.71s
[INFO] running `Command { std: "docker" "inspect" "3529e1844835f682edfa2cea7ee941987a9024fb1a843ad063f6b4dd2eb4f203", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3529e1844835f682edfa2cea7ee941987a9024fb1a843ad063f6b4dd2eb4f203", kill_on_drop: false }`
[INFO] [stdout] 3529e1844835f682edfa2cea7ee941987a9024fb1a843ad063f6b4dd2eb4f203
[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=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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ab1723f8cf4d07c6e8f44f01701b6e7fbf7c4dcc027841dbaceef30715123ac
[INFO] running `Command { std: "docker" "start" "-a" "2ab1723f8cf4d07c6e8f44f01701b6e7fbf7c4dcc027841dbaceef30715123ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling tiny-multihash-proc-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]   --> src/utils.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Attrs<A> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub paren: syn::token::Paren,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `eq` are never read
[INFO] [stdout]   --> src/utils.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Attr<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 27 |     pub key: K,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 28 |     pub eq: syn::token::Eq,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v0.6.1
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]   --> src/utils.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Attrs<A> {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 12 |     pub paren: syn::token::Paren,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attrs` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `key` and `eq` are never read
[INFO] [stdout]   --> src/utils.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Attr<K, V> {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 27 |     pub key: K,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 28 |     pub eq: syn::token::Eq,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Attr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.76s
[INFO] running `Command { std: "docker" "inspect" "2ab1723f8cf4d07c6e8f44f01701b6e7fbf7c4dcc027841dbaceef30715123ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab1723f8cf4d07c6e8f44f01701b6e7fbf7c4dcc027841dbaceef30715123ac", kill_on_drop: false }`
[INFO] [stdout] 2ab1723f8cf4d07c6e8f44f01701b6e7fbf7c4dcc027841dbaceef30715123ac