[INFO] cloning repository https://github.com/asn-d6/blobbers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asn-d6/blobbers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasn-d6%2Fblobbers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasn-d6%2Fblobbers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d21d8f80ca20a383cb91c40a3369053bf6c5c08
[INFO] testing asn-d6/blobbers against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasn-d6%2Fblobbers" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asn-d6/blobbers on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asn-d6/blobbers
[INFO] finished tweaking git repo https://github.com/asn-d6/blobbers
[INFO] tweaked toml for git repo https://github.com/asn-d6/blobbers written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/asn-d6/blobbers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19478a3b65d1740310eb1e81a4385c13945f78301aa890daf0750d76e7346b3e
[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" "19478a3b65d1740310eb1e81a4385c13945f78301aa890daf0750d76e7346b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19478a3b65d1740310eb1e81a4385c13945f78301aa890daf0750d76e7346b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19478a3b65d1740310eb1e81a4385c13945f78301aa890daf0750d76e7346b3e", kill_on_drop: false }`
[INFO] [stdout] 19478a3b65d1740310eb1e81a4385c13945f78301aa890daf0750d76e7346b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--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] 4b9c27f6180ba423d75d49bdddceabeea766773da5e3503aa96467036eddf8ee
[INFO] running `Command { std: "docker" "start" "-a" "4b9c27f6180ba423d75d49bdddceabeea766773da5e3503aa96467036eddf8ee", 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] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling wyz v0.5.0
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling bitvec v1.0.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling blobbers v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `FIELD_ELEMENTS_PER_BLOB`
[INFO] [stdout]  --> src/packer_naive.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const FIELD_ELEMENTS_PER_BLOB: usize = 1016;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BLOBS_PER_TX`
[INFO] [stdout]  --> src/packer_naive.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BLOBS_PER_TX: usize = 2;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BYTES_PER_FIELD_ELEMENT`
[INFO] [stdout]   --> src/packer_naive.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BYTES_PER_FIELD_ELEMENT: usize = 32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `USEFUL_BYTES_PER_FIELD_ELEMENT`
[INFO] [stdout]   --> src/packer_naive.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | const USEFUL_BYTES_PER_FIELD_ELEMENT: usize = 31;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `USEFUL_BYTES_PER_BLOB`
[INFO] [stdout]   --> src/packer_naive.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const USEFUL_BYTES_PER_BLOB: usize = USEFUL_BYTES_PER_FIELD_ELEMENT * FIELD_ELEMENTS_PER_BLOB;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_USEFUL_BYTES_PER_TX`
[INFO] [stdout]   --> src/packer_naive.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const MAX_USEFUL_BYTES_PER_TX: usize = (USEFUL_BYTES_PER_BLOB * MAX_BLOBS_PER_TX) - 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOB_SIZE`
[INFO] [stdout]   --> src/packer_naive.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const BLOB_SIZE: usize = BYTES_PER_FIELD_ELEMENT * FIELD_ELEMENTS_PER_BLOB;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Blob`
[INFO] [stdout]   --> src/packer_naive.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Blob = [u8; BLOB_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DataLengthError`
[INFO] [stdout]   --> src/packer_naive.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     DataLengthError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `PackingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/packer_naive.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[derive(Error, Debug)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnpadError`
[INFO] [stdout]   --> src/packer_naive.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     UnpadError,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `PackingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/packer_naive.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[derive(Error, Debug)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_padded`
[INFO] [stdout]   --> src/packer_naive.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn get_padded(data: &[u8], n_blobs: usize) -> Vec<u8> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_blob`
[INFO] [stdout]   --> src/packer_naive.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn get_blob(data: &[u8; USEFUL_BYTES_PER_BLOB]) -> Blob {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_blobs_from_data`
[INFO] [stdout]   --> src/packer_naive.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn get_blobs_from_data(data: &[u8]) -> Result<Vec<Blob>, PackingError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BLOBS_PER_TX`
[INFO] [stdout]  --> src/packer_tight.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BLOBS_PER_TX: usize = 2;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FIELD_ELEMENTS_PER_BLOB`
[INFO] [stdout]   --> src/packer_tight.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const FIELD_ELEMENTS_PER_BLOB: usize = 4096;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `USEFUL_BYTES_PER_TIGHT_BLOB`
[INFO] [stdout]   --> src/packer_tight.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | const USEFUL_BYTES_PER_TIGHT_BLOB: usize = (254 * FIELD_ELEMENTS_PER_BLOB) / 8; // 254 bits per field element
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_TIGHT_USEFUL_BYTES_PER_TX`
[INFO] [stdout]   --> src/packer_tight.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub const MAX_TIGHT_USEFUL_BYTES_PER_TX: usize = (USEFUL_BYTES_PER_TIGHT_BLOB * MAX_BLOBS_PER_TX) - 1;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BYTES_PER_FIELD_ELEMENT`
[INFO] [stdout]   --> src/packer_tight.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const BYTES_PER_FIELD_ELEMENT: usize = 32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BLOB_SIZE`
[INFO] [stdout]   --> src/packer_tight.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const BLOB_SIZE: usize = BYTES_PER_FIELD_ELEMENT * FIELD_ELEMENTS_PER_BLOB; // 32512
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Blob`
[INFO] [stdout]   --> src/packer_tight.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | type Blob = [u8; BLOB_SIZE];
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DataLengthError`
[INFO] [stdout]   --> src/packer_tight.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     DataLengthError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `PackingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/packer_tight.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[derive(Error, Debug)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnpadError`
[INFO] [stdout]   --> src/packer_tight.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     UnpadError,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `PackingError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/packer_tight.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 | #[derive(Error, Debug)]
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_padded_tight`
[INFO] [stdout]   --> src/packer_tight.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn get_padded_tight(data: &[u8], n_blobs: usize) -> Vec<u8> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_packed_blob`
[INFO] [stdout]   --> src/packer_tight.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn get_packed_blob(data: &[u8; USEFUL_BYTES_PER_TIGHT_BLOB]) -> Blob {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_blobs_from_data`
[INFO] [stdout]   --> src/packer_tight.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn get_blobs_from_data(data: &[u8]) -> Result<Vec<Blob>, PackingError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(int_roundings)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blobbers` due to 2 previous errors; 25 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4b9c27f6180ba423d75d49bdddceabeea766773da5e3503aa96467036eddf8ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b9c27f6180ba423d75d49bdddceabeea766773da5e3503aa96467036eddf8ee", kill_on_drop: false }`
[INFO] [stdout] 4b9c27f6180ba423d75d49bdddceabeea766773da5e3503aa96467036eddf8ee