[INFO] fetching crate zlang 0.1.1...
[INFO] testing zlang-0.1.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate zlang 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate zlang 0.1.1
[INFO] finished tweaking crates.io crate zlang 0.1.1
[INFO] tweaked toml for crates.io crate zlang 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zlang 0.1.1 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zlang 0.1.1 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1671039b1f07dfd26df15511db34194ec39a0c12ac9de57ce48e53689019c512
[INFO] running `Command { std: "docker" "start" "-a" "1671039b1f07dfd26df15511db34194ec39a0c12ac9de57ce48e53689019c512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1671039b1f07dfd26df15511db34194ec39a0c12ac9de57ce48e53689019c512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1671039b1f07dfd26df15511db34194ec39a0c12ac9de57ce48e53689019c512", kill_on_drop: false }`
[INFO] [stdout] 1671039b1f07dfd26df15511db34194ec39a0c12ac9de57ce48e53689019c512
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52b5d4f95ec8709394005f748b57edc926b22baff95cd8214287309a8d396cae
[INFO] running `Command { std: "docker" "start" "-a" "52b5d4f95ec8709394005f748b57edc926b22baff95cd8214287309a8d396cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling zlang v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:130:35
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     let mut end = start;
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 | ...                   end = j + ch.len_utf8();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "52b5d4f95ec8709394005f748b57edc926b22baff95cd8214287309a8d396cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52b5d4f95ec8709394005f748b57edc926b22baff95cd8214287309a8d396cae", kill_on_drop: false }`
[INFO] [stdout] 52b5d4f95ec8709394005f748b57edc926b22baff95cd8214287309a8d396cae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 918359e90a4902b7355702f6fa6b0afd6df4fe887efdb05665a68df256876882
[INFO] running `Command { std: "docker" "start" "-a" "918359e90a4902b7355702f6fa6b0afd6df4fe887efdb05665a68df256876882", kill_on_drop: false }`
[INFO] [stderr]    Compiling zlang v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:130:35
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     let mut end = start;
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 | ...                   end = j + ch.len_utf8();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:130:35
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     let mut end = start;
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:138:33
[INFO] [stdout]     |
[INFO] [stdout] 138 | ...                   end = j + ch.len_utf8();
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "918359e90a4902b7355702f6fa6b0afd6df4fe887efdb05665a68df256876882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "918359e90a4902b7355702f6fa6b0afd6df4fe887efdb05665a68df256876882", kill_on_drop: false }`
[INFO] [stdout] 918359e90a4902b7355702f6fa6b0afd6df4fe887efdb05665a68df256876882
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0cd19b4b974aa5506c3bb9f26e546b2351405113bef92ccc98eaea9508da6f46
[INFO] running `Command { std: "docker" "start" "-a" "0cd19b4b974aa5506c3bb9f26e546b2351405113bef92ccc98eaea9508da6f46", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `end` is never read
[INFO] [stderr]    --> src/lib.rs:130:35
[INFO] [stderr]     |
[INFO] [stderr] 130 |                     let mut end = start;
[INFO] [stderr]     |                                   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `end` is never read
[INFO] [stderr]    --> src/lib.rs:138:33
[INFO] [stderr]     |
[INFO] [stderr] 138 | ...                   end = j + ch.len_utf8();
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `zlang` (lib) generated 2 warnings
[INFO] [stderr] warning: `zlang` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zlang-ba16f0e8082ae23c)
[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] [stderr]    Doc-tests zlang
[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" "0cd19b4b974aa5506c3bb9f26e546b2351405113bef92ccc98eaea9508da6f46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cd19b4b974aa5506c3bb9f26e546b2351405113bef92ccc98eaea9508da6f46", kill_on_drop: false }`
[INFO] [stdout] 0cd19b4b974aa5506c3bb9f26e546b2351405113bef92ccc98eaea9508da6f46