[INFO] fetching crate rustversion-msrv 0.100.0...
[INFO] building rustversion-msrv-0.100.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate rustversion-msrv 0.100.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rustversion-msrv 0.100.0
[INFO] finished tweaking crates.io crate rustversion-msrv 0.100.0
[INFO] tweaked toml for crates.io crate rustversion-msrv 0.100.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustversion-msrv 0.100.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 28 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae3e724d06ebdcb9792a0c42595ddc442dab1b020a300d77db8ffa4aad11acdb
[INFO] running `Command { std: "docker" "start" "-a" "ae3e724d06ebdcb9792a0c42595ddc442dab1b020a300d77db8ffa4aad11acdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae3e724d06ebdcb9792a0c42595ddc442dab1b020a300d77db8ffa4aad11acdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae3e724d06ebdcb9792a0c42595ddc442dab1b020a300d77db8ffa4aad11acdb", kill_on_drop: false }`
[INFO] [stdout] ae3e724d06ebdcb9792a0c42595ddc442dab1b020a300d77db8ffa4aad11acdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7898d2bc14d38244b4182ceacad1982f95b77fe14e4195a4d14e1fbf9383a649
[INFO] running `Command { std: "docker" "start" "-a" "7898d2bc14d38244b4182ceacad1982f95b77fe14e4195a4d14e1fbf9383a649", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion-msrv v0.100.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Date` is never constructed
[INFO] [stdout]   --> build/rustc.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Date {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Release` is never constructed
[INFO] [stdout]  --> src/release.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Release {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "7898d2bc14d38244b4182ceacad1982f95b77fe14e4195a4d14e1fbf9383a649", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7898d2bc14d38244b4182ceacad1982f95b77fe14e4195a4d14e1fbf9383a649", kill_on_drop: false }`
[INFO] [stdout] 7898d2bc14d38244b4182ceacad1982f95b77fe14e4195a4d14e1fbf9383a649
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56959860c5c110d4d9b3bbf5f48ca5ea703883f159f0ef3205897003426932a8
[INFO] running `Command { std: "docker" "start" "-a" "56959860c5c110d4d9b3bbf5f48ca5ea703883f159f0ef3205897003426932a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-triple v0.1.4
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stdout] warning: struct `Date` is never constructed
[INFO] [stdout]   --> build/rustc.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Date {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_spanned v1.0.2
[INFO] [stderr]    Compiling toml_datetime v0.7.2
[INFO] [stderr]    Compiling toml_writer v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling dissimilar v1.0.10
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling glob v0.3.3
[INFO] [stderr]    Compiling rustversion-msrv v0.100.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Release` is never constructed
[INFO] [stdout]  --> src/release.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Release {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling toml_parser v1.0.3
[INFO] [stderr]    Compiling toml v0.9.7
[INFO] [stderr]    Compiling trybuild v1.0.111
[INFO] [stdout] warning: struct `Release` is never constructed
[INFO] [stdout]  --> src/release.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Release {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 15.57s
[INFO] running `Command { std: "docker" "inspect" "56959860c5c110d4d9b3bbf5f48ca5ea703883f159f0ef3205897003426932a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56959860c5c110d4d9b3bbf5f48ca5ea703883f159f0ef3205897003426932a8", kill_on_drop: false }`
[INFO] [stdout] 56959860c5c110d4d9b3bbf5f48ca5ea703883f159f0ef3205897003426932a8