[INFO] cloning repository https://github.com/data-pup/cargo-metadata-exercise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/data-pup/cargo-metadata-exercise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdata-pup%2Fcargo-metadata-exercise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdata-pup%2Fcargo-metadata-exercise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 756fc3afe4e803d5bfd37de7d60ba1d616657ede
[INFO] checking data-pup/cargo-metadata-exercise/756fc3afe4e803d5bfd37de7d60ba1d616657ede against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdata-pup%2Fcargo-metadata-exercise" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/data-pup/cargo-metadata-exercise on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/data-pup/cargo-metadata-exercise
[INFO] finished tweaking git repo https://github.com/data-pup/cargo-metadata-exercise
[INFO] tweaked toml for git repo https://github.com/data-pup/cargo-metadata-exercise written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/data-pup/cargo-metadata-exercise 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.2
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded cfg-if v0.1.5
[INFO] [stderr]   Downloaded quote v0.6.8
[INFO] [stderr]   Downloaded cargo_metadata v0.6.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.9
[INFO] [stderr]   Downloaded ryu v0.2.6
[INFO] [stderr]   Downloaded error-chain v0.12.0
[INFO] [stderr]   Downloaded backtrace v0.3.9
[INFO] [stderr]   Downloaded serde_derive v1.0.76
[INFO] [stderr]   Downloaded serde_json v1.0.26
[INFO] [stderr]   Downloaded proc-macro2 v0.4.17
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] [stderr]   Downloaded backtrace-sys v0.1.24
[INFO] [stderr]   Downloaded winapi v0.3.5
[INFO] [stderr]   Downloaded serde v1.0.76
[INFO] [stderr]   Downloaded cc v1.0.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 436295f6ead959d38e161ce2a1e77c0856a8630f0c8dea0b783e4f4cb7db8216
[INFO] running `Command { std: "docker" "start" "-a" "436295f6ead959d38e161ce2a1e77c0856a8630f0c8dea0b783e4f4cb7db8216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "436295f6ead959d38e161ce2a1e77c0856a8630f0c8dea0b783e4f4cb7db8216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "436295f6ead959d38e161ce2a1e77c0856a8630f0c8dea0b783e4f4cb7db8216", kill_on_drop: false }`
[INFO] [stdout] 436295f6ead959d38e161ce2a1e77c0856a8630f0c8dea0b783e4f4cb7db8216
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f6dd24cf10dd440e9ae08ee4ac2b095e577547ce53530c1502da4c5e49b9275
[INFO] running `Command { std: "docker" "start" "-a" "0f6dd24cf10dd440e9ae08ee4ac2b095e577547ce53530c1502da4c5e49b9275", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling cc v1.0.23
[INFO] [stderr]    Compiling serde v1.0.76
[INFO] [stderr]    Compiling proc-macro2 v0.4.17
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.76
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking cargo_metadata v0.6.0
[INFO] [stderr]     Checking cargo-metadata-ex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `package` is never read
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct _CargoLockfile {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 14 |     package: Vec<_CargoLockfileDependency>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `_CargoLockfile` 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: fields `name`, `version`, `source`, and `dependencies` are never read
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct _CargoLockfileDependency {
[INFO] [stdout]    |        ------------------------ fields in this struct
[INFO] [stdout] 20 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     version: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 22 |     source: Option<String>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     dependencies: Option<Vec<String>>
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `_CargoLockfileDependency` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `package` is never read
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct _CargoLockfile {
[INFO] [stdout]    |        -------------- field in this struct
[INFO] [stdout] 14 |     package: Vec<_CargoLockfileDependency>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `_CargoLockfile` 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: fields `name`, `version`, `source`, and `dependencies` are never read
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct _CargoLockfileDependency {
[INFO] [stdout]    |        ------------------------ fields in this struct
[INFO] [stdout] 20 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 21 |     version: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 22 |     source: Option<String>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 23 |     dependencies: Option<Vec<String>>
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `_CargoLockfileDependency` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.47s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "0f6dd24cf10dd440e9ae08ee4ac2b095e577547ce53530c1502da4c5e49b9275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f6dd24cf10dd440e9ae08ee4ac2b095e577547ce53530c1502da4c5e49b9275", kill_on_drop: false }`
[INFO] [stdout] 0f6dd24cf10dd440e9ae08ee4ac2b095e577547ce53530c1502da4c5e49b9275