[INFO] cloning repository https://github.com/cramertj/link-error-repro
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cramertj/link-error-repro" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcramertj%2Flink-error-repro", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcramertj%2Flink-error-repro'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4b055cadec6caa3aefa908df65e3ac1c2ee7506
[INFO] checking cramertj/link-error-repro against master#2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a for pr-145113
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcramertj%2Flink-error-repro" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cramertj/link-error-repro
[INFO] finished tweaking git repo https://github.com/cramertj/link-error-repro
[INFO] tweaked toml for git repo https://github.com/cramertj/link-error-repro written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cramertj/link-error-repro on toolchain 2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cramertj/link-error-repro already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v0.13.4
[INFO] [stderr]   Downloaded structopt-derive v0.2.8
[INFO] [stderr]   Downloaded structopt v0.2.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7a18f3c044ca4d0115bde4f38a3ec67654ecaca5fd75059b8706f5c1c79f7bb
[INFO] running `Command { std: "docker" "start" "-a" "f7a18f3c044ca4d0115bde4f38a3ec67654ecaca5fd75059b8706f5c1c79f7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7a18f3c044ca4d0115bde4f38a3ec67654ecaca5fd75059b8706f5c1c79f7bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a18f3c044ca4d0115bde4f38a3ec67654ecaca5fd75059b8706f5c1c79f7bb", kill_on_drop: false }`
[INFO] [stdout] f7a18f3c044ca4d0115bde4f38a3ec67654ecaca5fd75059b8706f5c1c79f7bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c89b9062591bfb40cf4e21b93f5b4e3bbddd206aae08aacde0962a7e52e1ee4
[INFO] running `Command { std: "docker" "start" "-a" "9c89b9062591bfb40cf4e21b93f5b4e3bbddd206aae08aacde0962a7e52e1ee4", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/nightly/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]    Compiling structopt-derive v0.2.8
[INFO] [stderr]     Checking structopt v0.2.8
[INFO] [stderr]     Checking rolldice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Rng` and `thread_rng`
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `thread_rng`
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::{thread_rng, Rng};
[INFO] [stdout]   |            ^^^^^^^^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let config = Config::from_args();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `number_of_dice` and `dice_per_row` are never read
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Config {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 11 |     #[structopt(help="Number of dice", default_value="1")]
[INFO] [stdout] 12 |     number_of_dice: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     dice_per_row: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `config`
[INFO] [stdout]   --> src/main.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let config = Config::from_args();
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_config`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `number_of_dice` and `dice_per_row` are never read
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Config {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 11 |     #[structopt(help="Number of dice", default_value="1")]
[INFO] [stdout] 12 |     number_of_dice: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     dice_per_row: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Config` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.13.4
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "9c89b9062591bfb40cf4e21b93f5b4e3bbddd206aae08aacde0962a7e52e1ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c89b9062591bfb40cf4e21b93f5b4e3bbddd206aae08aacde0962a7e52e1ee4", kill_on_drop: false }`
[INFO] [stdout] 9c89b9062591bfb40cf4e21b93f5b4e3bbddd206aae08aacde0962a7e52e1ee4