[INFO] fetching crate zlang 0.1.1...
[INFO] testing zlang-0.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate zlang 0.1.1 into /workspace/builds/worker-0-tc1/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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zlang 0.1.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c3d6a37b5aa6931c3c38a83a0e781c71c5df69fff5241c5bf2c5e2d21949701
[INFO] running `Command { std: "docker" "start" "-a" "6c3d6a37b5aa6931c3c38a83a0e781c71c5df69fff5241c5bf2c5e2d21949701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c3d6a37b5aa6931c3c38a83a0e781c71c5df69fff5241c5bf2c5e2d21949701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c3d6a37b5aa6931c3c38a83a0e781c71c5df69fff5241c5bf2c5e2d21949701", kill_on_drop: false }`
[INFO] [stdout] 6c3d6a37b5aa6931c3c38a83a0e781c71c5df69fff5241c5bf2c5e2d21949701
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91f065e19945a112ec487d2bfc1f48731982205d214f141d0793ba51a106d47e
[INFO] running `Command { std: "docker" "start" "-a" "91f065e19945a112ec487d2bfc1f48731982205d214f141d0793ba51a106d47e", 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:130:29
[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 0.32s
[INFO] running `Command { std: "docker" "inspect" "91f065e19945a112ec487d2bfc1f48731982205d214f141d0793ba51a106d47e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f065e19945a112ec487d2bfc1f48731982205d214f141d0793ba51a106d47e", kill_on_drop: false }`
[INFO] [stdout] 91f065e19945a112ec487d2bfc1f48731982205d214f141d0793ba51a106d47e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8d53ceb5ee57d191280cdb1b8870ba4e1d33dce6c8279a1e4d0f86603e23b01
[INFO] running `Command { std: "docker" "start" "-a" "d8d53ceb5ee57d191280cdb1b8870ba4e1d33dce6c8279a1e4d0f86603e23b01", kill_on_drop: false }`
[INFO] [stdout] warning: value assigned to `end` is never read
[INFO] [stdout]    --> src/lib.rs:130:29
[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:130:29
[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 0.45s
[INFO] running `Command { std: "docker" "inspect" "d8d53ceb5ee57d191280cdb1b8870ba4e1d33dce6c8279a1e4d0f86603e23b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8d53ceb5ee57d191280cdb1b8870ba4e1d33dce6c8279a1e4d0f86603e23b01", kill_on_drop: false }`
[INFO] [stdout] d8d53ceb5ee57d191280cdb1b8870ba4e1d33dce6c8279a1e4d0f86603e23b01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3e68831b477d69760156432aa8042fedf598a1250e7075627783804f3a6dda4b
[INFO] running `Command { std: "docker" "start" "-a" "3e68831b477d69760156432aa8042fedf598a1250e7075627783804f3a6dda4b", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `end` is never read
[INFO] [stderr]    --> src/lib.rs:130:29
[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-9e1d5b7d6675228b)
[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] [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" "3e68831b477d69760156432aa8042fedf598a1250e7075627783804f3a6dda4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e68831b477d69760156432aa8042fedf598a1250e7075627783804f3a6dda4b", kill_on_drop: false }`
[INFO] [stdout] 3e68831b477d69760156432aa8042fedf598a1250e7075627783804f3a6dda4b