[INFO] fetching crate fractran_rs 0.6.1...
[INFO] testing fractran_rs-0.6.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate fractran_rs 0.6.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate fractran_rs 0.6.1
[INFO] finished tweaking crates.io crate fractran_rs 0.6.1
[INFO] tweaked toml for crates.io crate fractran_rs 0.6.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fractran_rs 0.6.1 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fractran_rs 0.6.1 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bc51aa5205ea239933472ac198daab5e265c96d41d45b8c7dae62d66ae3068e
[INFO] running `Command { std: "docker" "start" "-a" "5bc51aa5205ea239933472ac198daab5e265c96d41d45b8c7dae62d66ae3068e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bc51aa5205ea239933472ac198daab5e265c96d41d45b8c7dae62d66ae3068e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc51aa5205ea239933472ac198daab5e265c96d41d45b8c7dae62d66ae3068e", kill_on_drop: false }`
[INFO] [stdout] 5bc51aa5205ea239933472ac198daab5e265c96d41d45b8c7dae62d66ae3068e
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9cfd6dc783069e8ea572c20fda3d9a92a89089eba9a51177255704497544e8b
[INFO] running `Command { std: "docker" "start" "-a" "f9cfd6dc783069e8ea572c20fda3d9a92a89089eba9a51177255704497544e8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fractran_rs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "f9cfd6dc783069e8ea572c20fda3d9a92a89089eba9a51177255704497544e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9cfd6dc783069e8ea572c20fda3d9a92a89089eba9a51177255704497544e8b", kill_on_drop: false }`
[INFO] [stdout] f9cfd6dc783069e8ea572c20fda3d9a92a89089eba9a51177255704497544e8b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c06caa64508bd83a1fe993ab75d8c5760b8fd582cfe06dbbef918fbf4cbd875b
[INFO] running `Command { std: "docker" "start" "-a" "c06caa64508bd83a1fe993ab75d8c5760b8fd582cfe06dbbef918fbf4cbd875b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fractran_rs v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/add.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct AddOutput(u32);
[INFO] [stdout]    |        --------- ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `AddOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/multiply.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct MultiplyOutput(u32);
[INFO] [stdout]    |        -------------- ^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `MultiplyOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 0.74s
[INFO] running `Command { std: "docker" "inspect" "c06caa64508bd83a1fe993ab75d8c5760b8fd582cfe06dbbef918fbf4cbd875b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c06caa64508bd83a1fe993ab75d8c5760b8fd582cfe06dbbef918fbf4cbd875b", kill_on_drop: false }`
[INFO] [stdout] c06caa64508bd83a1fe993ab75d8c5760b8fd582cfe06dbbef918fbf4cbd875b
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5a038653cacb511b311805c2f781755a6f77882bc140961c55ba3d01fd045be0
[INFO] running `Command { std: "docker" "start" "-a" "5a038653cacb511b311805c2f781755a6f77882bc140961c55ba3d01fd045be0", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stdout] 
[INFO] [stderr]   --> examples/add.rs:12:18
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 12 | struct AddOutput(u32);
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |        --------- ^^^
[INFO] [stdout] 
[INFO] [stderr]    |        |
[INFO] [stderr]    |        field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `AddOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fractran_rs` (example "add") generated 1 warning
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> examples/multiply.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct MultiplyOutput(u32);
[INFO] [stderr]    |        -------------- ^^^
[INFO] [stderr]    |        |
[INFO] [stderr]    |        field in this struct
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing this field
[INFO] [stderr]    = note: `MultiplyOutput` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fractran_rs` (example "multiply") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fractran_rs-3e63569e9cc3f013)
[INFO] [stderr]    Doc-tests fractran_rs
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 72) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 83) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 48) - compile ... ok
[INFO] [stdout] test src/lib.rs - fractran (line 75) ... ok
[INFO] [stdout] test src/lib.rs - (line 39) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5a038653cacb511b311805c2f781755a6f77882bc140961c55ba3d01fd045be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a038653cacb511b311805c2f781755a6f77882bc140961c55ba3d01fd045be0", kill_on_drop: false }`
[INFO] [stdout] 5a038653cacb511b311805c2f781755a6f77882bc140961c55ba3d01fd045be0