[INFO] fetching crate derive_asref 0.1.0...
[INFO] checking derive_asref-0.1.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate derive_asref 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate derive_asref 0.1.0
[INFO] finished tweaking crates.io crate derive_asref 0.1.0
[INFO] tweaked toml for crates.io crate derive_asref 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate derive_asref 0.1.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 35 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.104)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86881973d54d6310087bbcc768ac10b23a02b0a2c638c9982d9d9edfced78bd7
[INFO] running `Command { std: "docker" "start" "-a" "86881973d54d6310087bbcc768ac10b23a02b0a2c638c9982d9d9edfced78bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86881973d54d6310087bbcc768ac10b23a02b0a2c638c9982d9d9edfced78bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86881973d54d6310087bbcc768ac10b23a02b0a2c638c9982d9d9edfced78bd7", kill_on_drop: false }`
[INFO] [stdout] 86881973d54d6310087bbcc768ac10b23a02b0a2c638c9982d9d9edfced78bd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ec9b31ae9e63a24e625d8865417f68eb15b603eabb2cbbe64e354c6f8442f1d
[INFO] running `Command { std: "docker" "start" "-a" "0ec9b31ae9e63a24e625d8865417f68eb15b603eabb2cbbe64e354c6f8442f1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking toml_write v0.1.2
[INFO] [stderr]     Checking winnow v0.7.11
[INFO] [stderr]    Compiling target-triple v0.1.4
[INFO] [stderr]     Checking glob v0.3.2
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking derive_asref v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `attrs` is never read
[INFO] [stdout]  --> src/structs.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Struct {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 5 |     pub ident: syn::Ident,
[INFO] [stdout] 6 |     pub attrs: Vec<Attribute>,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stdout] warning: field `attrs` is never read
[INFO] [stdout]  --> src/structs.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Struct {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 5 |     pub ident: syn::Ident,
[INFO] [stdout] 6 |     pub attrs: Vec<Attribute>,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking toml_datetime v0.6.11
[INFO] [stderr]     Checking serde_spanned v0.6.9
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking toml_edit v0.22.27
[INFO] [stderr]     Checking toml v0.8.23
[INFO] [stderr]     Checking trybuild v1.0.105
[INFO] [stdout] warning: field `attrs` is never read
[INFO] [stdout]  --> src/structs.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Struct {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 5 |     pub ident: syn::Ident,
[INFO] [stdout] 6 |     pub attrs: Vec<Attribute>,
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.06s
[INFO] running `Command { std: "docker" "inspect" "0ec9b31ae9e63a24e625d8865417f68eb15b603eabb2cbbe64e354c6f8442f1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ec9b31ae9e63a24e625d8865417f68eb15b603eabb2cbbe64e354c6f8442f1d", kill_on_drop: false }`
[INFO] [stdout] 0ec9b31ae9e63a24e625d8865417f68eb15b603eabb2cbbe64e354c6f8442f1d