[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] c64758226349f70a9674122422acb81529b51cac
[INFO] checking asn-d6/blobbers against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasn-d6%2Fblobbers" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asn-d6/blobbers on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-1-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8882ef89cb10bf335cb6de62665b7bab3f820116ca0ecb3cdf61cb7b9e28f36b
[INFO] running `Command { std: "docker" "start" "-a" "8882ef89cb10bf335cb6de62665b7bab3f820116ca0ecb3cdf61cb7b9e28f36b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8882ef89cb10bf335cb6de62665b7bab3f820116ca0ecb3cdf61cb7b9e28f36b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8882ef89cb10bf335cb6de62665b7bab3f820116ca0ecb3cdf61cb7b9e28f36b", kill_on_drop: false }`
[INFO] [stdout] 8882ef89cb10bf335cb6de62665b7bab3f820116ca0ecb3cdf61cb7b9e28f36b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c58d9d002dc05cfa511d339f06542cee375055d9f858c623a5f3c31e63e65b96
[INFO] running `Command { std: "docker" "start" "-a" "c58d9d002dc05cfa511d339f06542cee375055d9f858c623a5f3c31e63e65b96", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking wyz v0.5.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking bitvec v1.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Checking blobbers v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> benches/perf_packing.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FIELD_ELEMENTS_PER_BLOB` is never used
[INFO] [stdout]  --> src/packer_naive.rs:6:7
[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 `MAX_BLOBS_PER_TX` is never used
[INFO] [stdout]  --> src/packer_naive.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BLOBS_PER_TX: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BYTES_PER_FIELD_ELEMENT` is never used
[INFO] [stdout]   --> src/packer_naive.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BYTES_PER_FIELD_ELEMENT: usize = 32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `USEFUL_BYTES_PER_FIELD_ELEMENT` is never used
[INFO] [stdout]   --> src/packer_naive.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const USEFUL_BYTES_PER_FIELD_ELEMENT: usize = 31;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `USEFUL_BYTES_PER_BLOB` is never used
[INFO] [stdout]   --> src/packer_naive.rs:15:7
[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 `MAX_USEFUL_BYTES_PER_TX` is never used
[INFO] [stdout]   --> src/packer_naive.rs:17:11
[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 `BLOB_SIZE` is never used
[INFO] [stdout]   --> src/packer_naive.rs:19:7
[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 `Blob` is never used
[INFO] [stdout]   --> src/packer_naive.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Blob = [u8; BLOB_SIZE];
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DataLengthError` and `UnpadError` are never constructed
[INFO] [stdout]   --> src/packer_naive.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum PackingError {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 28 |     #[error("Bad data length")]
[INFO] [stdout] 29 |     DataLengthError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 30 |     #[error("Failed to unpad")]
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_padded` is never used
[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 `get_blob` is never used
[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 `get_blobs_from_data` is never used
[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 `MAX_BLOBS_PER_TX` is never used
[INFO] [stdout]  --> src/packer_tight.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BLOBS_PER_TX: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FIELD_ELEMENTS_PER_BLOB` is never used
[INFO] [stdout]   --> src/packer_tight.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const FIELD_ELEMENTS_PER_BLOB: usize = 4096;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `USEFUL_BYTES_PER_TIGHT_BLOB` is never used
[INFO] [stdout]   --> src/packer_tight.rs:13:7
[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 `MAX_TIGHT_USEFUL_BYTES_PER_TX` is never used
[INFO] [stdout]   --> src/packer_tight.rs:15:11
[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 `BYTES_PER_FIELD_ELEMENT` is never used
[INFO] [stdout]   --> src/packer_tight.rs:18:7
[INFO] [stdout]    |
[INFO] [stdout] 18 | const BYTES_PER_FIELD_ELEMENT: usize = 32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOB_SIZE` is never used
[INFO] [stdout]   --> src/packer_tight.rs:20:7
[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 `Blob` is never used
[INFO] [stdout]   --> src/packer_tight.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | type Blob = [u8; BLOB_SIZE];
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DataLengthError` and `UnpadError` are never constructed
[INFO] [stdout]   --> src/packer_tight.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub enum PackingError {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 29 |     #[error("Bad data length")]
[INFO] [stdout] 30 |     DataLengthError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 31 |     #[error("Failed to unpad")]
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_padded_tight` is never used
[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 `get_packed_blob` is never used
[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 `get_blobs_from_data` is never used
[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] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.53s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "c58d9d002dc05cfa511d339f06542cee375055d9f858c623a5f3c31e63e65b96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c58d9d002dc05cfa511d339f06542cee375055d9f858c623a5f3c31e63e65b96", kill_on_drop: false }`
[INFO] [stdout] c58d9d002dc05cfa511d339f06542cee375055d9f858c623a5f3c31e63e65b96
[INFO] checking asn-d6/blobbers against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasn-d6%2Fblobbers" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asn-d6/blobbers on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-1-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e27ad4a6c43a5b3a97b3610fae644a3632644df05ee97ad98efe4fbf4e473201
[INFO] running `Command { std: "docker" "start" "-a" "e27ad4a6c43a5b3a97b3610fae644a3632644df05ee97ad98efe4fbf4e473201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e27ad4a6c43a5b3a97b3610fae644a3632644df05ee97ad98efe4fbf4e473201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e27ad4a6c43a5b3a97b3610fae644a3632644df05ee97ad98efe4fbf4e473201", kill_on_drop: false }`
[INFO] [stdout] e27ad4a6c43a5b3a97b3610fae644a3632644df05ee97ad98efe4fbf4e473201
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3944e519d6b70b63e6002796cd883a7346af3f175653b4bb5dfd3facb2dcd262
[INFO] running `Command { std: "docker" "start" "-a" "3944e519d6b70b63e6002796cd883a7346af3f175653b4bb5dfd3facb2dcd262", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking plotters-backend v0.3.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking plotters-svg v0.3.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking clap v2.34.0
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[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking criterion-plot v0.4.4
[INFO] [stderr]     Checking bitvec v1.0.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking criterion v0.3.5
[INFO] [stderr]     Checking blobbers v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> benches/perf_packing.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FIELD_ELEMENTS_PER_BLOB` is never used
[INFO] [stdout]  --> src/packer_naive.rs:6:7
[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 `MAX_BLOBS_PER_TX` is never used
[INFO] [stdout]  --> src/packer_naive.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BLOBS_PER_TX: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BYTES_PER_FIELD_ELEMENT` is never used
[INFO] [stdout]   --> src/packer_naive.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const BYTES_PER_FIELD_ELEMENT: usize = 32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `USEFUL_BYTES_PER_FIELD_ELEMENT` is never used
[INFO] [stdout]   --> src/packer_naive.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const USEFUL_BYTES_PER_FIELD_ELEMENT: usize = 31;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `USEFUL_BYTES_PER_BLOB` is never used
[INFO] [stdout]   --> src/packer_naive.rs:15:7
[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 `MAX_USEFUL_BYTES_PER_TX` is never used
[INFO] [stdout]   --> src/packer_naive.rs:17:11
[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 `BLOB_SIZE` is never used
[INFO] [stdout]   --> src/packer_naive.rs:19:7
[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 `Blob` is never used
[INFO] [stdout]   --> src/packer_naive.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 22 | type Blob = [u8; BLOB_SIZE];
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DataLengthError` and `UnpadError` are never constructed
[INFO] [stdout]   --> src/packer_naive.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub enum PackingError {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 28 |     #[error("Bad data length")]
[INFO] [stdout] 29 |     DataLengthError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 30 |     #[error("Failed to unpad")]
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_padded` is never used
[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 `get_blob` is never used
[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 `get_blobs_from_data` is never used
[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 `MAX_BLOBS_PER_TX` is never used
[INFO] [stdout]  --> src/packer_tight.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const MAX_BLOBS_PER_TX: usize = 2;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `FIELD_ELEMENTS_PER_BLOB` is never used
[INFO] [stdout]   --> src/packer_tight.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const FIELD_ELEMENTS_PER_BLOB: usize = 4096;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `USEFUL_BYTES_PER_TIGHT_BLOB` is never used
[INFO] [stdout]   --> src/packer_tight.rs:13:7
[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 `MAX_TIGHT_USEFUL_BYTES_PER_TX` is never used
[INFO] [stdout]   --> src/packer_tight.rs:15:11
[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 `BYTES_PER_FIELD_ELEMENT` is never used
[INFO] [stdout]   --> src/packer_tight.rs:18:7
[INFO] [stdout]    |
[INFO] [stdout] 18 | const BYTES_PER_FIELD_ELEMENT: usize = 32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BLOB_SIZE` is never used
[INFO] [stdout]   --> src/packer_tight.rs:20:7
[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 `Blob` is never used
[INFO] [stdout]   --> src/packer_tight.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 | type Blob = [u8; BLOB_SIZE];
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `DataLengthError` and `UnpadError` are never constructed
[INFO] [stdout]   --> src/packer_tight.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub enum PackingError {
[INFO] [stdout]    |          ------------ variants in this enum
[INFO] [stdout] 29 |     #[error("Bad data length")]
[INFO] [stdout] 30 |     DataLengthError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 31 |     #[error("Failed to unpad")]
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_padded_tight` is never used
[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 `get_packed_blob` is never used
[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 `get_blobs_from_data` is never used
[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] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.47s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.5
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "3944e519d6b70b63e6002796cd883a7346af3f175653b4bb5dfd3facb2dcd262", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3944e519d6b70b63e6002796cd883a7346af3f175653b4bb5dfd3facb2dcd262", kill_on_drop: false }`
[INFO] [stdout] 3944e519d6b70b63e6002796cd883a7346af3f175653b4bb5dfd3facb2dcd262