[INFO] fetching crate csparse21 0.2.3...
[INFO] testing csparse21-0.2.3 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate csparse21 0.2.3 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate csparse21 0.2.3
[INFO] finished tweaking crates.io crate csparse21 0.2.3
[INFO] tweaked toml for crates.io crate csparse21 0.2.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate csparse21 0.2.3 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd14894bf040124104ab02390adebd0fcafa14149178e84d4e1af491cab8a22b
[INFO] running `Command { std: "docker" "start" "-a" "fd14894bf040124104ab02390adebd0fcafa14149178e84d4e1af491cab8a22b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd14894bf040124104ab02390adebd0fcafa14149178e84d4e1af491cab8a22b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd14894bf040124104ab02390adebd0fcafa14149178e84d4e1af491cab8a22b", kill_on_drop: false }`
[INFO] [stdout] fd14894bf040124104ab02390adebd0fcafa14149178e84d4e1af491cab8a22b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 745dfeefb8e2beb959270d7f180a3ad2a0fc37127aed7da0a1455314cce1ee93
[INFO] running `Command { std: "docker" "start" "-a" "745dfeefb8e2beb959270d7f180a3ad2a0fc37127aed7da0a1455314cce1ee93", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling csparse21 v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NonRealNumError` is never constructed
[INFO] [stdout]     --> src/lib.rs:1117:8
[INFO] [stdout]      |
[INFO] [stdout] 1117 | struct NonRealNumError;
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `NonRealNumError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.08s
[INFO] running `Command { std: "docker" "inspect" "745dfeefb8e2beb959270d7f180a3ad2a0fc37127aed7da0a1455314cce1ee93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "745dfeefb8e2beb959270d7f180a3ad2a0fc37127aed7da0a1455314cce1ee93", kill_on_drop: false }`
[INFO] [stdout] 745dfeefb8e2beb959270d7f180a3ad2a0fc37127aed7da0a1455314cce1ee93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 3d52314304cd16527d9de4a58ea1d27ece9f71bfcddf6ceaac7e9ec4ff194f5c
[INFO] running `Command { std: "docker" "start" "-a" "3d52314304cd16527d9de4a58ea1d27ece9f71bfcddf6ceaac7e9ec4ff194f5c", kill_on_drop: false }`
[INFO] [stdout] warning: struct `NonRealNumError` is never constructed
[INFO] [stdout]     --> src/lib.rs:1117:8
[INFO] [stdout]      |
[INFO] [stdout] 1117 | struct NonRealNumError;
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `NonRealNumError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling csparse21 v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `NonRealNumError` is never constructed
[INFO] [stdout]     --> src/lib.rs:1117:8
[INFO] [stdout]      |
[INFO] [stdout] 1117 | struct NonRealNumError;
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `NonRealNumError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "3d52314304cd16527d9de4a58ea1d27ece9f71bfcddf6ceaac7e9ec4ff194f5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d52314304cd16527d9de4a58ea1d27ece9f71bfcddf6ceaac7e9ec4ff194f5c", kill_on_drop: false }`
[INFO] [stdout] 3d52314304cd16527d9de4a58ea1d27ece9f71bfcddf6ceaac7e9ec4ff194f5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 4ef1e562b733127007b065d851f52447e6204605ae296cbd5c8c0d37f4590eea
[INFO] running `Command { std: "docker" "start" "-a" "4ef1e562b733127007b065d851f52447e6204605ae296cbd5c8c0d37f4590eea", kill_on_drop: false }`
[INFO] [stderr] warning: struct `NonRealNumError` is never constructed
[INFO] [stderr]     --> src/lib.rs:1117:8
[INFO] [stderr]      |
[INFO] [stderr] 1117 | struct NonRealNumError;
[INFO] [stderr]      |        ^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `NonRealNumError` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]      = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `csparse21` (lib) generated 1 warning
[INFO] [stderr] warning: `csparse21` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/csparse21-afd90c3d068f493e)
[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" "4ef1e562b733127007b065d851f52447e6204605ae296cbd5c8c0d37f4590eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ef1e562b733127007b065d851f52447e6204605ae296cbd5c8c0d37f4590eea", kill_on_drop: false }`
[INFO] [stdout] 4ef1e562b733127007b065d851f52447e6204605ae296cbd5c8c0d37f4590eea