[INFO] fetching crate constrainer 0.0.2...
[INFO] testing constrainer-0.0.2 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate constrainer 0.0.2 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate constrainer 0.0.2 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate constrainer 0.0.2
[INFO] finished tweaking crates.io crate constrainer 0.0.2
[INFO] tweaked toml for crates.io crate constrainer 0.0.2 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] crate crates.io crate constrainer 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d240348e5f3bcb907e59df5cc4452588bcf1a5e31d07ad2444fccd275251ca9
[INFO] running `Command { std: "docker" "start" "-a" "7d240348e5f3bcb907e59df5cc4452588bcf1a5e31d07ad2444fccd275251ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d240348e5f3bcb907e59df5cc4452588bcf1a5e31d07ad2444fccd275251ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d240348e5f3bcb907e59df5cc4452588bcf1a5e31d07ad2444fccd275251ca9", kill_on_drop: false }`
[INFO] [stdout] 7d240348e5f3bcb907e59df5cc4452588bcf1a5e31d07ad2444fccd275251ca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15b075d31b389681430fa6e923eca40ce1c28fa794e4e0af0c76fb03fbcc0d52
[INFO] running `Command { std: "docker" "start" "-a" "15b075d31b389681430fa6e923eca40ce1c28fa794e4e0af0c76fb03fbcc0d52", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling constrainer v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `block`
[INFO] [stdout]    --> src/lib.rs:492:5
[INFO] [stdout]     |
[INFO] [stdout] 492 |     block: TokenStream,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Constrained` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:488:10
[INFO] [stdout]     |
[INFO] [stdout] 488 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block`
[INFO] [stdout]    --> src/lib.rs:506:5
[INFO] [stdout]     |
[INFO] [stdout] 506 |     block: TokenStream,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Listener` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:503:10
[INFO] [stdout]     |
[INFO] [stdout] 503 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.62s
[INFO] running `Command { std: "docker" "inspect" "15b075d31b389681430fa6e923eca40ce1c28fa794e4e0af0c76fb03fbcc0d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15b075d31b389681430fa6e923eca40ce1c28fa794e4e0af0c76fb03fbcc0d52", kill_on_drop: false }`
[INFO] [stdout] 15b075d31b389681430fa6e923eca40ce1c28fa794e4e0af0c76fb03fbcc0d52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37dd5ab13bcec18ef6a71a7f3cc95af018be13c9277f859cecc231d79ebec963
[INFO] running `Command { std: "docker" "start" "-a" "37dd5ab13bcec18ef6a71a7f3cc95af018be13c9277f859cecc231d79ebec963", kill_on_drop: false }`
[INFO] [stderr]    Compiling constrainer v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `block`
[INFO] [stdout]    --> src/lib.rs:492:5
[INFO] [stdout]     |
[INFO] [stdout] 492 |     block: TokenStream,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Constrained` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:488:10
[INFO] [stdout]     |
[INFO] [stdout] 488 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block`
[INFO] [stdout]    --> src/lib.rs:506:5
[INFO] [stdout]     |
[INFO] [stdout] 506 |     block: TokenStream,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Listener` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:503:10
[INFO] [stdout]     |
[INFO] [stdout] 503 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `x`
[INFO] [stdout]   --> examples/readme.rs:8:13
[INFO] [stdout]    |
[INFO] [stdout] 8  |     dynamic x f32
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `MyConstrainer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> examples/readme.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | / create_constrainer!(MyConstrainer {
[INFO] [stdout] 8  | |     dynamic x f32
[INFO] [stdout] 9  | |     constrained y f32 (x) {
[INFO] [stdout] 10 | |         compute_y(x)
[INFO] [stdout] ...  |
[INFO] [stdout] 14 | |     }
[INFO] [stdout] 15 | | });
[INFO] [stdout]    | |__^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block`
[INFO] [stdout]    --> src/lib.rs:492:5
[INFO] [stdout]     |
[INFO] [stdout] 492 |     block: TokenStream,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Constrained` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:488:10
[INFO] [stdout]     |
[INFO] [stdout] 488 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `block`
[INFO] [stdout]    --> src/lib.rs:506:5
[INFO] [stdout]     |
[INFO] [stdout] 506 |     block: TokenStream,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `Listener` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/lib.rs:503:10
[INFO] [stdout]     |
[INFO] [stdout] 503 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.39s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/constrainer-69e855ad504c76a6)
[INFO] running `Command { std: "docker" "inspect" "37dd5ab13bcec18ef6a71a7f3cc95af018be13c9277f859cecc231d79ebec963", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37dd5ab13bcec18ef6a71a7f3cc95af018be13c9277f859cecc231d79ebec963", kill_on_drop: false }`
[INFO] [stdout] 37dd5ab13bcec18ef6a71a7f3cc95af018be13c9277f859cecc231d79ebec963
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c9f8165bc5b9fd037eff61641e4bd98fdd48e7d455ffc342985da212b538c602
[INFO] running `Command { std: "docker" "start" "-a" "c9f8165bc5b9fd037eff61641e4bd98fdd48e7d455ffc342985da212b538c602", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `block`
[INFO] [stderr]    --> src/lib.rs:492:5
[INFO] [stderr]     |
[INFO] [stderr] 492 |     block: TokenStream,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Constrained` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/lib.rs:488:10
[INFO] [stderr]     |
[INFO] [stderr] 488 | #[derive(Debug)]
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `block`
[INFO] [stderr]    --> src/lib.rs:506:5
[INFO] [stderr]     |
[INFO] [stderr] 506 |     block: TokenStream,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: `Listener` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/lib.rs:503:10
[INFO] [stderr]     |
[INFO] [stderr] 503 | #[derive(Debug)]
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `constrainer` (lib) generated 2 warnings
[INFO] [stderr] warning: `constrainer` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr] warning: field is never read: `x`
[INFO] [stderr]   --> examples/readme.rs:8:13
[INFO] [stderr]    |
[INFO] [stderr] 8  |     dynamic x f32
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `MyConstrainer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   --> examples/readme.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / create_constrainer!(MyConstrainer {
[INFO] [stderr] 8  | |     dynamic x f32
[INFO] [stderr] 9  | |     constrained y f32 (x) {
[INFO] [stderr] 10 | |         compute_y(x)
[INFO] [stderr] ...  |
[INFO] [stderr] 14 | |     }
[INFO] [stderr] 15 | | });
[INFO] [stderr]    | |__^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `constrainer` (example "readme") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/constrainer-69e855ad504c76a6)
[INFO] [stderr]    Doc-tests constrainer
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c9f8165bc5b9fd037eff61641e4bd98fdd48e7d455ffc342985da212b538c602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9f8165bc5b9fd037eff61641e4bd98fdd48e7d455ffc342985da212b538c602", kill_on_drop: false }`
[INFO] [stdout] c9f8165bc5b9fd037eff61641e4bd98fdd48e7d455ffc342985da212b538c602