[INFO] fetching crate tfrecord 0.4.1...
[INFO] checking tfrecord-0.4.1 against beta for pr-78714
[INFO] extracting crate tfrecord 0.4.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tfrecord 0.4.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tfrecord 0.4.1
[INFO] finished tweaking crates.io crate tfrecord 0.4.1
[INFO] tweaked toml for crates.io crate tfrecord 0.4.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate tfrecord 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bfeab647fe408cdd174d74322d242370351a3ffa2df3f109dc97d8f757e8c8b
[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" "9bfeab647fe408cdd174d74322d242370351a3ffa2df3f109dc97d8f757e8c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bfeab647fe408cdd174d74322d242370351a3ffa2df3f109dc97d8f757e8c8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bfeab647fe408cdd174d74322d242370351a3ffa2df3f109dc97d8f757e8c8b", kill_on_drop: false }`
[INFO] [stdout] 9bfeab647fe408cdd174d74322d242370351a3ffa2df3f109dc97d8f757e8c8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] ac2f617618f6096d156f58cae4abb7017e9f8421347d3672ccc579ddbfe12004
[INFO] running `Command { std: "docker" "start" "-a" "ac2f617618f6096d156f58cae4abb7017e9f8421347d3672ccc579ddbfe12004", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling cc v1.0.60
[INFO] [stderr]    Compiling const_fn v0.4.2
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[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling tinyvec v0.3.4
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[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling packed_struct v0.3.0
[INFO] [stderr]    Compiling chunked_transfer v1.2.0
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
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[INFO] [stderr]     Checking integer-encoding v1.1.5
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking noisy_float v0.1.13
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[INFO] [stderr]    Compiling rand v0.7.3
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[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling time v0.2.22
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]     Checking ureq v1.5.0
[INFO] [stderr]    Compiling prost-types v0.6.1
[INFO] [stderr]    Compiling tfrecord v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling packed_struct_codegen v0.3.0
[INFO] [stdout] warning: unused imports: `TryInfoImageList`, `error::Error`, `summary::Image`
[INFO] [stdout]  --> src/conversions/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     markers::{HistogramProtoElement, TensorProtoElement, TryInfoImageList},
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     protos::{
[INFO] [stdout] 5 |         feature::Kind, summary::Image, tensor_shape_proto::Dim, BytesList, DataType,
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `convert::TryFrom`, `io::Cursor`, `ops::Deref`, `slice`
[INFO] [stdout]   --> src/conversions/mod.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 |     collections::HashMap, convert::TryFrom, io::Cursor, ops::Deref, slice, sync::atomic::Ordering,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TryInfoImageList`, `error::Error`, `summary::Image`
[INFO] [stdout]  --> src/conversions/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     markers::{HistogramProtoElement, TensorProtoElement, TryInfoImageList},
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 |     protos::{
[INFO] [stdout] 5 |         feature::Kind, summary::Image, tensor_shape_proto::Dim, BytesList, DataType,
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `convert::TryFrom`, `io::Cursor`, `ops::Deref`, `slice`
[INFO] [stdout]   --> src/conversions/mod.rs:14:27
[INFO] [stdout]    |
[INFO] [stdout] 14 |     collections::HashMap, convert::TryFrom, io::Cursor, ops::Deref, slice, sync::atomic::Ordering,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Luma`
[INFO] [stdout]   --> src/conversions/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Luma = 1,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LumaA`
[INFO] [stdout]   --> src/conversions/mod.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     LumaA = 2,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Rgb`
[INFO] [stdout]   --> src/conversions/mod.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Rgb = 3,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Rgba`
[INFO] [stdout]   --> src/conversions/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Rgba = 4,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DigitalYuv`
[INFO] [stdout]   --> src/conversions/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     DigitalYuv = 5,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bgra`
[INFO] [stdout]   --> src/conversions/mod.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Bgra = 6,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_with_data`
[INFO] [stdout]   --> src/conversions/mod.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn build_with_data<T>(self, data: &[T]) -> TensorProto
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Result`
[INFO] [stdout]  --> examples/tensorboard_async.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> examples/tensorboard_async.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{io, path::PathBuf};
[INFO] [stdout]   |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow::Result`
[INFO] [stdout]  --> examples/tensorboard.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::Result;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> examples/tensorboard.rs:2:11
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{io, path::PathBuf};
[INFO] [stdout]   |           ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::*`
[INFO] [stdout]  --> tests/summary.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use common::*;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::seq::SliceRandom`
[INFO] [stdout]  --> tests/summary.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::seq::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand_distr::Distribution`
[INFO] [stdout]  --> tests/summary.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand_distr::Distribution;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `common::*`
[INFO] [stdout]  --> tests/dataset.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use common::*;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> tests/dataset.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Luma`
[INFO] [stdout]   --> src/conversions/mod.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Luma = 1,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LumaA`
[INFO] [stdout]   --> src/conversions/mod.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     LumaA = 2,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Rgb`
[INFO] [stdout]   --> src/conversions/mod.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Rgb = 3,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Rgba`
[INFO] [stdout]   --> src/conversions/mod.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Rgba = 4,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DigitalYuv`
[INFO] [stdout]   --> src/conversions/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     DigitalYuv = 5,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bgra`
[INFO] [stdout]   --> src/conversions/mod.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     Bgra = 6,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_with_data`
[INFO] [stdout]   --> src/conversions/mod.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn build_with_data<T>(self, data: &[T]) -> TensorProto
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 00s
[INFO] running `Command { std: "docker" "inspect" "ac2f617618f6096d156f58cae4abb7017e9f8421347d3672ccc579ddbfe12004", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac2f617618f6096d156f58cae4abb7017e9f8421347d3672ccc579ddbfe12004", kill_on_drop: false }`
[INFO] [stdout] ac2f617618f6096d156f58cae4abb7017e9f8421347d3672ccc579ddbfe12004