[INFO] fetching crate auto-diff 0.3.8...
[INFO] checking auto-diff-0.3.8 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] extracting crate auto-diff 0.3.8 into /workspace/builds/worker-76/source
[INFO] validating manifest of crates.io crate auto-diff 0.3.8 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate auto-diff 0.3.8
[INFO] finished tweaking crates.io crate auto-diff 0.3.8
[INFO] tweaked toml for crates.io crate auto-diff 0.3.8 written to /workspace/builds/worker-76/source/Cargo.toml
[INFO] crate crates.io crate auto-diff 0.3.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cauchy v0.2.2
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[INFO] [stderr]   Downloaded openblas-src v0.9.0
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[INFO] [stdout] 54e446d5251ff6204ebb075bf5d35004b4895da4fd0f5d0b48e837bdab067c4a
[INFO] running `Command { std: "docker" "start" "-a" "54e446d5251ff6204ebb075bf5d35004b4895da4fd0f5d0b48e837bdab067c4a", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-76/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9d6e85197f0db91c984b27c884ef6337009e2299d686c37c0ccffae15322c6b
[INFO] running `Command { std: "docker" "start" "-a" "a9d6e85197f0db91c984b27c884ef6337009e2299d686c37c0ccffae15322c6b", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   num-traits v0.2.12: i128
[INFO] [stderr] 
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking blas-src v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking blas-src v0.3.0
[INFO] [stderr]     Checking lapack-src v0.3.0
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling protobuf v2.17.0
[INFO] [stderr]    Compiling openblas-src v0.9.0
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[INFO] [stderr]     Checking walkdir v2.3.1
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[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-complex v0.2.4
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[INFO] [stderr]    Compiling rayon v1.3.1
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[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
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[INFO] [stderr]     Checking tiff v0.5.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking cblas-sys v0.1.4
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[INFO] [stderr]     Checking atty v0.2.14
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[INFO] [stderr]     Checking rand_core v0.5.1
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[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking cauchy v0.2.2
[INFO] [stderr]     Checking lapacke v0.2.0
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking image v0.23.8
[INFO] [stderr]     Checking ndarray-linalg v0.11.1
[INFO] [stderr]     Checking tensor-rs v0.3.8
[INFO] [stderr]     Checking auto-diff v0.3.8 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stdout] warning: field is never read: `cmd`
[INFO] [stdout]    --> src/var.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cmd: VarCmd,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/bin/try_out.rs from 2018 edition to 2021
[INFO] [stderr]     Checking tensorboard-rs v0.2.4
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]    Migrating examples/mlp.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/mlp_mnist.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/alexnet.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/test_op.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/test_auto_diff.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/logistic_regression.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/linear_regression.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/mnist.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating examples/cnn_mnist.rs from 2018 edition to 2021
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/collection/generational_index.rs:156:10
[INFO] [stdout]     |
[INFO] [stdout] 156 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed examples/mlp.rs (2 fixes)
[INFO] [stderr]        Fixed examples/alexnet.rs (3 fixes)
[INFO] [stdout] warning: field is never read: `cmd`
[INFO] [stdout]    --> src/var.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cmd: VarCmd,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_CrossEntropyLoss` should have a snake case name
[INFO] [stdout]    --> src/op/loss.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn test_CrossEntropyLoss() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_cross_entropy_loss`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `alexnet`
[INFO] [stdout]  --> examples/alexnet.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn alexnet(_x: Var) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed tests/test_auto_diff.rs (3 fixes)
[INFO] [stderr]        Fixed examples/logistic_regression.rs (2 fixes)
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> examples/linear_regression.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let N = 100;
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ill` is never read
[INFO] [stdout]   --> examples/logistic_regression.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         ill = line[1].trim().parse::<String>().expect("");
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed examples/cnn_mnist.rs (7 fixes)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 20s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]     Checking auto-diff v0.3.8 (/tmp/fixit)
[INFO] [stdout] warning: field is never read: `cmd`
[INFO] [stdout]    --> src/var.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cmd: VarCmd,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stdout] warning: function is never used: `alexnet`
[INFO] [stdout]  --> examples/alexnet.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn alexnet(_x: Var) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ill` is never read
[INFO] [stdout]   --> examples/logistic_regression.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         ill = line[1].trim().parse::<String>().expect("");
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/collection/generational_index.rs:156:10
[INFO] [stdout]     |
[INFO] [stdout] 156 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> examples/linear_regression.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let N = 100;
[INFO] [stdout]    |         ^ help: convert the identifier to snake case: `n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cmd`
[INFO] [stdout]    --> src/var.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     cmd: VarCmd,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_CrossEntropyLoss` should have a snake case name
[INFO] [stdout]    --> src/op/loss.rs:265:8
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn test_CrossEntropyLoss() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_cross_entropy_loss`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.80s
[INFO] running `Command { std: "docker" "inspect" "a9d6e85197f0db91c984b27c884ef6337009e2299d686c37c0ccffae15322c6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9d6e85197f0db91c984b27c884ef6337009e2299d686c37c0ccffae15322c6b", kill_on_drop: false }`
[INFO] [stdout] a9d6e85197f0db91c984b27c884ef6337009e2299d686c37c0ccffae15322c6b