[INFO] fetching crate caoe 0.1.2...
[INFO] testing caoe-0.1.2 against try#fc4ba03ef77ca5018fb78a097d3b924d30f15bfc+target=i686-unknown-linux-musl for musl_upgrade_1_2_take3
[INFO] extracting crate caoe 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate caoe 0.1.2 on toolchain fc4ba03ef77ca5018fb78a097d3b924d30f15bfc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate caoe 0.1.2
[INFO] finished tweaking crates.io crate caoe 0.1.2
[INFO] tweaked toml for crates.io crate caoe 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded findshlibs v0.10.2
[INFO] [stderr]   Downloaded prctl v1.0.0
[INFO] [stderr]   Downloaded procspawn v0.10.1
[INFO] [stderr]   Downloaded ipc-channel v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98ee66318a9265599a186e04f3dcd112844c0989ca00c8af26aa361ebb35589b
[INFO] running `Command { std: "docker" "start" "-a" "98ee66318a9265599a186e04f3dcd112844c0989ca00c8af26aa361ebb35589b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98ee66318a9265599a186e04f3dcd112844c0989ca00c8af26aa361ebb35589b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ee66318a9265599a186e04f3dcd112844c0989ca00c8af26aa361ebb35589b", kill_on_drop: false }`
[INFO] [stdout] 98ee66318a9265599a186e04f3dcd112844c0989ca00c8af26aa361ebb35589b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] b3f7bf2cb3248b08b776b7b09ad27943cb5987cb7f3c4f6d5b03cae048d2bafe
[INFO] running `Command { std: "docker" "start" "-a" "b3f7bf2cb3248b08b776b7b09ad27943cb5987cb7f3c4f6d5b03cae048d2bafe", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling nix v0.22.3
[INFO] [stderr]    Compiling nix v0.26.1
[INFO] [stderr]    Compiling prctl v1.0.0
[INFO] [stderr]    Compiling caoe v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 94 | /         loop {
[INFO] [stdout] 95 | |             pause();
[INFO] [stdout] 96 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 97 |           return;
[INFO] [stdout]    |           ^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.18s
[INFO] running `Command { std: "docker" "inspect" "b3f7bf2cb3248b08b776b7b09ad27943cb5987cb7f3c4f6d5b03cae048d2bafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3f7bf2cb3248b08b776b7b09ad27943cb5987cb7f3c4f6d5b03cae048d2bafe", kill_on_drop: false }`
[INFO] [stdout] b3f7bf2cb3248b08b776b7b09ad27943cb5987cb7f3c4f6d5b03cae048d2bafe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 3abc49e8414be5083108c3e4b72476817daae58eff83699f52bf88df8aa644e1
[INFO] running `Command { std: "docker" "start" "-a" "3abc49e8414be5083108c3e4b72476817daae58eff83699f52bf88df8aa644e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling serde_derive v1.0.149
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling serde v1.0.149
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling net2 v0.2.38
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling backtrace v0.3.66
[INFO] [stderr]    Compiling findshlibs v0.10.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling object v0.29.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 94 | /         loop {
[INFO] [stdout] 95 | |             pause();
[INFO] [stdout] 96 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 97 |           return;
[INFO] [stdout]    |           ^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling ipc-channel v0.15.0
[INFO] [stderr]    Compiling procspawn v0.10.1
[INFO] [stderr]    Compiling caoe v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/lib.rs:97:9
[INFO] [stdout]    |
[INFO] [stdout] 94 | /         loop {
[INFO] [stdout] 95 | |             pause();
[INFO] [stdout] 96 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] 97 |           return;
[INFO] [stdout]    |           ^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.97s
[INFO] running `Command { std: "docker" "inspect" "3abc49e8414be5083108c3e4b72476817daae58eff83699f52bf88df8aa644e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3abc49e8414be5083108c3e4b72476817daae58eff83699f52bf88df8aa644e1", kill_on_drop: false }`
[INFO] [stdout] 3abc49e8414be5083108c3e4b72476817daae58eff83699f52bf88df8aa644e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 3b73fb3fc4035c17926a57054520be0935d13ae37e6fdccd81ebba61a9b03270
[INFO] running `Command { std: "docker" "start" "-a" "3b73fb3fc4035c17926a57054520be0935d13ae37e6fdccd81ebba61a9b03270", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/lib.rs:97:9
[INFO] [stderr]    |
[INFO] [stderr] 94 | /         loop {
[INFO] [stderr] 95 | |             pause();
[INFO] [stderr] 96 | |         }
[INFO] [stderr]    | |_________- any code following this expression is unreachable
[INFO] [stderr] 97 |           return;
[INFO] [stderr]    |           ^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `caoe` (lib) generated 2 warnings
[INFO] [stderr] warning: `caoe` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/caoe-242e6cbe2e58de5b)
[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]      Running tests/main.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/main-de2c36cf9003bac7)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] running `Command { std: "docker" "inspect" "3b73fb3fc4035c17926a57054520be0935d13ae37e6fdccd81ebba61a9b03270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b73fb3fc4035c17926a57054520be0935d13ae37e6fdccd81ebba61a9b03270", kill_on_drop: false }`
[INFO] [stdout] 3b73fb3fc4035c17926a57054520be0935d13ae37e6fdccd81ebba61a9b03270