[INFO] fetching crate printd 0.2.1...
[INFO] testing printd-0.2.1 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate printd 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate printd 0.2.1
[INFO] finished tweaking crates.io crate printd 0.2.1
[INFO] tweaked toml for crates.io crate printd 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate printd 0.2.1 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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 29812d18fa4e0af365da800ca1a1281999c9e5e359c27986ca216e4aa54cd871
[INFO] running `Command { std: "docker" "start" "-a" "29812d18fa4e0af365da800ca1a1281999c9e5e359c27986ca216e4aa54cd871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29812d18fa4e0af365da800ca1a1281999c9e5e359c27986ca216e4aa54cd871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29812d18fa4e0af365da800ca1a1281999c9e5e359c27986ca216e4aa54cd871", kill_on_drop: false }`
[INFO] [stdout] 29812d18fa4e0af365da800ca1a1281999c9e5e359c27986ca216e4aa54cd871
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] cb18a8dc1d03f1536df685112444e8250803768d13976eae03d543cc68379044
[INFO] running `Command { std: "docker" "start" "-a" "cb18a8dc1d03f1536df685112444e8250803768d13976eae03d543cc68379044", kill_on_drop: false }`
[INFO] [stderr]    Compiling printd v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "cb18a8dc1d03f1536df685112444e8250803768d13976eae03d543cc68379044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb18a8dc1d03f1536df685112444e8250803768d13976eae03d543cc68379044", kill_on_drop: false }`
[INFO] [stdout] cb18a8dc1d03f1536df685112444e8250803768d13976eae03d543cc68379044
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 483a4e74c6850063dec78bbc715f8356795e98d585dec860c808e3200c4cbd3b
[INFO] running `Command { std: "docker" "start" "-a" "483a4e74c6850063dec78bbc715f8356795e98d585dec860c808e3200c4cbd3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling printd v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `eggs` is never read
[INFO] [stdout]  --> tests/printd.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Bar {
[INFO] [stdout]   |        --- field in this struct
[INFO] [stdout] 6 |     eggs: Vec<usize>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Bar` has a derived impl for the trait `Debug`, but this is 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 0.48s
[INFO] running `Command { std: "docker" "inspect" "483a4e74c6850063dec78bbc715f8356795e98d585dec860c808e3200c4cbd3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "483a4e74c6850063dec78bbc715f8356795e98d585dec860c808e3200c4cbd3b", kill_on_drop: false }`
[INFO] [stdout] 483a4e74c6850063dec78bbc715f8356795e98d585dec860c808e3200c4cbd3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 37e054b6a1abdc63c9bd5c5b5b4f50d396ef0d599717b7eee8204a9bd5740b8e
[INFO] running `Command { std: "docker" "start" "-a" "37e054b6a1abdc63c9bd5c5b5b4f50d396ef0d599717b7eee8204a9bd5740b8e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: field `eggs` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> tests/printd.rs:6:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 5 | struct Bar {
[INFO] [stdout] 
[INFO] [stderr]   |        --- field in this struct
[INFO] [stdout] 
[INFO] [stderr] 6 |     eggs: Vec<usize>,
[INFO] [stdout] running 1 test
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Bar` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `printd` (test "printd") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/printd-29e5516cc38ac8b0)
[INFO] [stderr]      Running tests/printd.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/printd-ddf81247ebc8ed17)
[INFO] [stdout] test printd ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "37e054b6a1abdc63c9bd5c5b5b4f50d396ef0d599717b7eee8204a9bd5740b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37e054b6a1abdc63c9bd5c5b5b4f50d396ef0d599717b7eee8204a9bd5740b8e", kill_on_drop: false }`
[INFO] [stdout] 37e054b6a1abdc63c9bd5c5b5b4f50d396ef0d599717b7eee8204a9bd5740b8e