[INFO] cloning repository https://github.com/FractalDiane/midi-reader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FractalDiane/midi-reader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFractalDiane%2Fmidi-reader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFractalDiane%2Fmidi-reader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97abfdd7dcddc59cd0649fe825bbdc5bd1e2e2fd
[INFO] testing FractalDiane/midi-reader against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFractalDiane%2Fmidi-reader" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FractalDiane/midi-reader on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FractalDiane/midi-reader
[INFO] finished tweaking git repo https://github.com/FractalDiane/midi-reader
[INFO] tweaked toml for git repo https://github.com/FractalDiane/midi-reader written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/FractalDiane/midi-reader already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c33459aec561a9a85da4f65e711994b9a6455bfdcf98907f950168942654e0ef
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c33459aec561a9a85da4f65e711994b9a6455bfdcf98907f950168942654e0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c33459aec561a9a85da4f65e711994b9a6455bfdcf98907f950168942654e0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c33459aec561a9a85da4f65e711994b9a6455bfdcf98907f950168942654e0ef", kill_on_drop: false }`
[INFO] [stdout] c33459aec561a9a85da4f65e711994b9a6455bfdcf98907f950168942654e0ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4546bc987bb8fc3f1506486d7217101cbbe972b97e6f3ee16547c6635bc07412
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4546bc987bb8fc3f1506486d7217101cbbe972b97e6f3ee16547c6635bc07412", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling midi_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cast`
[INFO] [stdout]   --> src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | use num::{FromPrimitive, cast};
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `typ` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |             let typ: u8;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_typ` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `channel` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:254:8
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let channel: u8;
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_channel` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `typ` is never read
[INFO] [stdout]    --> src/main.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 typ = high4(*prev_status);
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `channel` is never read
[INFO] [stdout]    --> src/main.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 |                 channel = low4(*prev_status);
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `typ` is never read
[INFO] [stdout]    --> src/main.rs:265:5
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 typ = high4(status);
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `channel` is never read
[INFO] [stdout]    --> src/main.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 266 |                 channel = low4(status);
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.11s
[INFO] running `Command { std: "docker" "inspect" "4546bc987bb8fc3f1506486d7217101cbbe972b97e6f3ee16547c6635bc07412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4546bc987bb8fc3f1506486d7217101cbbe972b97e6f3ee16547c6635bc07412", kill_on_drop: false }`
[INFO] [stdout] 4546bc987bb8fc3f1506486d7217101cbbe972b97e6f3ee16547c6635bc07412
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 08141616dacdfed76162e640886d545b549a47cd18017bbf3689dacce72e7895
[INFO] running `Command { std: "docker" "start" "-a" "08141616dacdfed76162e640886d545b549a47cd18017bbf3689dacce72e7895", kill_on_drop: false }`
[INFO] [stderr]    Compiling midi_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `cast`
[INFO] [stdout]   --> src/main.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 | use num::{FromPrimitive, cast};
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `typ` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |             let typ: u8;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_typ` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `channel` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:254:8
[INFO] [stdout]     |
[INFO] [stdout] 254 |             let channel: u8;
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_channel` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `typ` is never read
[INFO] [stdout]    --> src/main.rs:259:5
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 typ = high4(*prev_status);
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `channel` is never read
[INFO] [stdout]    --> src/main.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 |                 channel = low4(*prev_status);
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `typ` is never read
[INFO] [stdout]    --> src/main.rs:265:5
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 typ = high4(status);
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `channel` is never read
[INFO] [stdout]    --> src/main.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 266 |                 channel = low4(status);
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.21s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "08141616dacdfed76162e640886d545b549a47cd18017bbf3689dacce72e7895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08141616dacdfed76162e640886d545b549a47cd18017bbf3689dacce72e7895", kill_on_drop: false }`
[INFO] [stdout] 08141616dacdfed76162e640886d545b549a47cd18017bbf3689dacce72e7895
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1e5889b69ee14f72ea34d355c8289d55b0d9722708ae3d333d3ccae3b358b66c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1e5889b69ee14f72ea34d355c8289d55b0d9722708ae3d333d3ccae3b358b66c", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `cast`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:17:26
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 17 | use num::{FromPrimitive, cast};
[INFO] [stdout] 
[INFO] [stderr]    |                          ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `typ` is assigned to, but never used
[INFO] [stderr]    --> src/main.rs:253:8
[INFO] [stderr]     |
[INFO] [stderr] 253 |             let typ: u8;
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_typ` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `channel` is assigned to, but never used
[INFO] [stderr]    --> src/main.rs:254:8
[INFO] [stderr]     |
[INFO] [stderr] 254 |             let channel: u8;
[INFO] [stderr]     |                 ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_channel` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `typ` is never read
[INFO] [stderr]    --> src/main.rs:259:5
[INFO] [stderr]     |
[INFO] [stderr] 259 |                 typ = high4(*prev_status);
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `channel` is never read
[INFO] [stderr]    --> src/main.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 |                 channel = low4(*prev_status);
[INFO] [stderr]     |                 ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `typ` is never read
[INFO] [stderr]    --> src/main.rs:265:5
[INFO] [stderr]     |
[INFO] [stderr] 265 |                 typ = high4(status);
[INFO] [stderr]     |                 ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `channel` is never read
[INFO] [stderr]    --> src/main.rs:266:5
[INFO] [stderr]     |
[INFO] [stderr] 266 |                 channel = low4(status);
[INFO] [stderr]     |                 ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/midi_reader-6a4db332c0e107b3
[INFO] running `Command { std: "docker" "inspect" "1e5889b69ee14f72ea34d355c8289d55b0d9722708ae3d333d3ccae3b358b66c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e5889b69ee14f72ea34d355c8289d55b0d9722708ae3d333d3ccae3b358b66c", kill_on_drop: false }`
[INFO] [stdout] 1e5889b69ee14f72ea34d355c8289d55b0d9722708ae3d333d3ccae3b358b66c