[INFO] fetching crate zlang 0.1.1...
[INFO] testing zlang-0.1.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate zlang 0.1.1 into /workspace/builds/worker-4-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-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zlang 0.1.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2ad5bef5b4567bbbbd4fcec7ba1b1153a6b188485c368b0dba438e1ea94108bf
[INFO] running `Command { std: "docker" "start" "-a" "2ad5bef5b4567bbbbd4fcec7ba1b1153a6b188485c368b0dba438e1ea94108bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ad5bef5b4567bbbbd4fcec7ba1b1153a6b188485c368b0dba438e1ea94108bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad5bef5b4567bbbbd4fcec7ba1b1153a6b188485c368b0dba438e1ea94108bf", kill_on_drop: false }`
[INFO] [stdout] 2ad5bef5b4567bbbbd4fcec7ba1b1153a6b188485c368b0dba438e1ea94108bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39caaf3defa7b2dabbfefbb761b186be4374d8c48c659562554c8a7e4b026583
[INFO] running `Command { std: "docker" "start" "-a" "39caaf3defa7b2dabbfefbb761b186be4374d8c48c659562554c8a7e4b026583", 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 0.18s
[INFO] running `Command { std: "docker" "inspect" "39caaf3defa7b2dabbfefbb761b186be4374d8c48c659562554c8a7e4b026583", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39caaf3defa7b2dabbfefbb761b186be4374d8c48c659562554c8a7e4b026583", kill_on_drop: false }`
[INFO] [stdout] 39caaf3defa7b2dabbfefbb761b186be4374d8c48c659562554c8a7e4b026583
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dc506142306a2c5be52e85d0b23e6dd310d3759190e18ebf4f09d43206c5e87
[INFO] running `Command { std: "docker" "start" "-a" "8dc506142306a2c5be52e85d0b23e6dd310d3759190e18ebf4f09d43206c5e87", kill_on_drop: false }`
[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]    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 `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "8dc506142306a2c5be52e85d0b23e6dd310d3759190e18ebf4f09d43206c5e87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc506142306a2c5be52e85d0b23e6dd310d3759190e18ebf4f09d43206c5e87", kill_on_drop: false }`
[INFO] [stdout] 8dc506142306a2c5be52e85d0b23e6dd310d3759190e18ebf4f09d43206c5e87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 755edc7889ce0fcf1aacc25b9c0620e22a965f5ce722534738390ffce7be6c87
[INFO] running `Command { std: "docker" "start" "-a" "755edc7889ce0fcf1aacc25b9c0620e22a965f5ce722534738390ffce7be6c87", 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 0.02s
[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" "755edc7889ce0fcf1aacc25b9c0620e22a965f5ce722534738390ffce7be6c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "755edc7889ce0fcf1aacc25b9c0620e22a965f5ce722534738390ffce7be6c87", kill_on_drop: false }`
[INFO] [stdout] 755edc7889ce0fcf1aacc25b9c0620e22a965f5ce722534738390ffce7be6c87