[INFO] fetching crate zlang 0.1.1...
[INFO] testing zlang-0.1.1 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate zlang 0.1.1 into /workspace/builds/worker-2-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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zlang 0.1.1 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86bba4dddb2e501313dc6ae72865e5808ad47ae2df666262fe0bd2fe17189fdc
[INFO] running `Command { std: "docker" "start" "-a" "86bba4dddb2e501313dc6ae72865e5808ad47ae2df666262fe0bd2fe17189fdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86bba4dddb2e501313dc6ae72865e5808ad47ae2df666262fe0bd2fe17189fdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86bba4dddb2e501313dc6ae72865e5808ad47ae2df666262fe0bd2fe17189fdc", kill_on_drop: false }`
[INFO] [stdout] 86bba4dddb2e501313dc6ae72865e5808ad47ae2df666262fe0bd2fe17189fdc
[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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e16077ab774a40b2d71683313c358b4a2dcde52972523523d5476b9817a74a6a
[INFO] running `Command { std: "docker" "start" "-a" "e16077ab774a40b2d71683313c358b4a2dcde52972523523d5476b9817a74a6a", 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]     |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 134 |                                 end = j;
[INFO] [stdout]     |                                 ------- `end` is overwritten here before the previous value is read
[INFO] [stdout]     |
[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]     |                       ^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 141 | ...                   end = code.len();
[INFO] [stdout]     |                       ---------------- `end` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "e16077ab774a40b2d71683313c358b4a2dcde52972523523d5476b9817a74a6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e16077ab774a40b2d71683313c358b4a2dcde52972523523d5476b9817a74a6a", kill_on_drop: false }`
[INFO] [stdout] e16077ab774a40b2d71683313c358b4a2dcde52972523523d5476b9817a74a6a
[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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 298a73cb65643edf5af57920946447e6155a4b91db96fc24cf5f8fc536cbad26
[INFO] running `Command { std: "docker" "start" "-a" "298a73cb65643edf5af57920946447e6155a4b91db96fc24cf5f8fc536cbad26", 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]     |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 134 |                                 end = j;
[INFO] [stdout]     |                                 ------- `end` is overwritten here before the previous value is read
[INFO] [stdout]     |
[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]     |                       ^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 141 | ...                   end = code.len();
[INFO] [stdout]     |                       ---------------- `end` is overwritten here before the previous value is 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]     |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 134 |                                 end = j;
[INFO] [stdout]     |                                 ------- `end` is overwritten here before the previous value is read
[INFO] [stdout]     |
[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]     |                       ^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 141 | ...                   end = code.len();
[INFO] [stdout]     |                       ---------------- `end` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "298a73cb65643edf5af57920946447e6155a4b91db96fc24cf5f8fc536cbad26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "298a73cb65643edf5af57920946447e6155a4b91db96fc24cf5f8fc536cbad26", kill_on_drop: false }`
[INFO] [stdout] 298a73cb65643edf5af57920946447e6155a4b91db96fc24cf5f8fc536cbad26
[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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 68a08cb41d690dc80c314c05e8779b6f43ab2e9bd5094d2b48b742b85fc35abb
[INFO] running `Command { std: "docker" "start" "-a" "68a08cb41d690dc80c314c05e8779b6f43ab2e9bd5094d2b48b742b85fc35abb", 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]     |                                   ^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 134 |                                 end = j;
[INFO] [stderr]     |                                 ------- `end` is overwritten here before the previous value is read
[INFO] [stderr]     |
[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]     |                       ^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 141 | ...                   end = code.len();
[INFO] [stderr]     |                       ---------------- `end` is overwritten here before the previous value is 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-f2a8ba99066bd611)
[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" "68a08cb41d690dc80c314c05e8779b6f43ab2e9bd5094d2b48b742b85fc35abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68a08cb41d690dc80c314c05e8779b6f43ab2e9bd5094d2b48b742b85fc35abb", kill_on_drop: false }`
[INFO] [stdout] 68a08cb41d690dc80c314c05e8779b6f43ab2e9bd5094d2b48b742b85fc35abb
