[INFO] fetching crate mirror_sparse_matrix 0.1.17...
[INFO] testing mirror_sparse_matrix-0.1.17 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate mirror_sparse_matrix 0.1.17 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mirror_sparse_matrix 0.1.17
[INFO] finished tweaking crates.io crate mirror_sparse_matrix 0.1.17
[INFO] tweaked toml for crates.io crate mirror_sparse_matrix 0.1.17 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mirror_sparse_matrix 0.1.17 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 132 packages to latest compatible versions
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 2cfd22a851c066972202ce07c239406a8ba85476d5331f7472500d1004004f31
[INFO] running `Command { std: "docker" "start" "-a" "2cfd22a851c066972202ce07c239406a8ba85476d5331f7472500d1004004f31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cfd22a851c066972202ce07c239406a8ba85476d5331f7472500d1004004f31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cfd22a851c066972202ce07c239406a8ba85476d5331f7472500d1004004f31", kill_on_drop: false }`
[INFO] [stdout] 2cfd22a851c066972202ce07c239406a8ba85476d5331f7472500d1004004f31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bc27b351283b8a6ac732a114c6b080f9be3a2435729e7f349effc68445ae082e
[INFO] running `Command { std: "docker" "start" "-a" "bc27b351283b8a6ac732a114c6b080f9be3a2435729e7f349effc68445ae082e", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling binary_vec_io v0.1.12
[INFO] [stderr]    Compiling mirror_sparse_matrix v0.1.17 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `pos` is never read
[INFO] [stdout]    --> src/lib.rs:316:17
[INFO] [stdout]     |
[INFO] [stdout] 316 |                 pos += 1;
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "bc27b351283b8a6ac732a114c6b080f9be3a2435729e7f349effc68445ae082e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc27b351283b8a6ac732a114c6b080f9be3a2435729e7f349effc68445ae082e", kill_on_drop: false }`
[INFO] [stdout] bc27b351283b8a6ac732a114c6b080f9be3a2435729e7f349effc68445ae082e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9873aebb23dc46e17ef516b7000d930365234013782fc6f4ff7b0ebd08f81daf
[INFO] running `Command { std: "docker" "start" "-a" "9873aebb23dc46e17ef516b7000d930365234013782fc6f4ff7b0ebd08f81daf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling cc v1.2.60
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling bytes v1.11.1
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling home v0.5.12
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling simd-adler32 v0.3.9
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling prost-build v0.9.0
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling lz4-sys v1.11.1+lz4-1.10.0
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling fixedbitset v0.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling prost-derive v0.9.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling superslice v1.0.0
[INFO] [stderr]    Compiling petgraph v0.6.5
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]    Compiling permutation v0.2.5
[INFO] [stderr]    Compiling multimap v0.8.3
[INFO] [stderr]    Compiling object v0.37.3
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling vector_utils v0.1.5
[INFO] [stderr]    Compiling debugid v0.7.3
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stderr]    Compiling findshlibs v0.10.2
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling symbolic-demangle v8.8.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.27
[INFO] [stderr]    Compiling gimli v0.32.3
[INFO] [stderr]    Compiling prost v0.9.0
[INFO] [stderr]    Compiling prost-types v0.9.0
[INFO] [stderr]    Compiling symbolic-common v8.8.0
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling string_utils v0.1.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling nix v0.23.2
[INFO] [stderr]    Compiling addr2line v0.25.1
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling stats_utils v0.1.3
[INFO] [stdout] warning: value assigned to `pos` is never read
[INFO] [stdout]    --> src/lib.rs:316:17
[INFO] [stdout]     |
[INFO] [stdout] 316 |                 pos += 1;
[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] [stderr]    Compiling pprof v0.6.2
[INFO] [stderr]    Compiling backtrace v0.3.76
[INFO] [stderr]    Compiling lz4 v1.28.1
[INFO] [stderr]    Compiling io_utils v0.3.2
[INFO] [stderr]    Compiling tables v0.1.5
[INFO] [stderr]    Compiling pretty_trace v0.5.23
[INFO] [stderr]    Compiling mirror_sparse_matrix v0.1.17 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `pos` is never read
[INFO] [stdout]    --> src/lib.rs:316:17
[INFO] [stdout]     |
[INFO] [stdout] 316 |                 pos += 1;
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 24s
[INFO] running `Command { std: "docker" "inspect" "9873aebb23dc46e17ef516b7000d930365234013782fc6f4ff7b0ebd08f81daf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9873aebb23dc46e17ef516b7000d930365234013782fc6f4ff7b0ebd08f81daf", kill_on_drop: false }`
[INFO] [stdout] 9873aebb23dc46e17ef516b7000d930365234013782fc6f4ff7b0ebd08f81daf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 861910812c24ae3525ec4a8f4ecfda639b8068a80069f95dbaf846be797f50c4
[INFO] running `Command { std: "docker" "start" "-a" "861910812c24ae3525ec4a8f4ecfda639b8068a80069f95dbaf846be797f50c4", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `pos` is never read
[INFO] [stderr]    --> src/lib.rs:316:17
[INFO] [stderr]     |
[INFO] [stderr] 316 |                 pos += 1;
[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: `mirror_sparse_matrix` (lib) generated 1 warning
[INFO] [stderr] warning: `mirror_sparse_matrix` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mirror_sparse_matrix-c4e6ef12d7bbffb1)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_mirror_sparse_matrix ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mirror_sparse_matrix
[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" "861910812c24ae3525ec4a8f4ecfda639b8068a80069f95dbaf846be797f50c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "861910812c24ae3525ec4a8f4ecfda639b8068a80069f95dbaf846be797f50c4", kill_on_drop: false }`
[INFO] [stdout] 861910812c24ae3525ec4a8f4ecfda639b8068a80069f95dbaf846be797f50c4