[INFO] fetching crate crfs 0.2.0...
[INFO] testing crfs-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate crfs 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate crfs 0.2.0
[INFO] finished tweaking crates.io crate crfs 0.2.0
[INFO] tweaked toml for crates.io crate crfs 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate crfs 0.2.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 76 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.10.0)
[INFO] [stderr]       Adding bstr v0.2.17 (available: v1.12.1)
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4d637c274229945ac3213c89ec784f8d7b4b0dca0a4d056c38209055dd7e46a
[INFO] running `Command { std: "docker" "start" "-a" "c4d637c274229945ac3213c89ec784f8d7b4b0dca0a4d056c38209055dd7e46a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4d637c274229945ac3213c89ec784f8d7b4b0dca0a4d056c38209055dd7e46a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4d637c274229945ac3213c89ec784f8d7b4b0dca0a4d056c38209055dd7e46a", kill_on_drop: false }`
[INFO] [stdout] c4d637c274229945ac3213c89ec784f8d7b4b0dca0a4d056c38209055dd7e46a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fa324c10595075878ef4519b980d1f00c88f1162e440ec558172988fe44af16
[INFO] running `Command { std: "docker" "start" "-a" "2fa324c10595075878ef4519b980d1f00c88f1162e440ec558172988fe44af16", kill_on_drop: false }`
[INFO] [stderr]    Compiling bstr v1.12.1
[INFO] [stderr]    Compiling jhash v0.1.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling array-init v2.1.0
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling cqdb v0.5.8
[INFO] [stderr]    Compiling crfs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `weight` and `group` are never read
[INFO] [stdout]   --> src/dataset.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Instance {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub weight: f64,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 24 |     /// Group ID of the instance
[INFO] [stdout] 25 |     pub group: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Instance` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FeatureRefHeader` is never constructed
[INFO] [stdout]   --> src/model.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct FeatureRefHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FeatureHeader` is never constructed
[INFO] [stdout]   --> src/model.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct FeatureHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `num_attrs` is never read
[INFO] [stdout]   --> src/tagger.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Tagger<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     num_attrs: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tagger` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/model.rs:189:29
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stdout]     |                             ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stdout]     |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/model.rs:201:28
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stdout]     |                            ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "2fa324c10595075878ef4519b980d1f00c88f1162e440ec558172988fe44af16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fa324c10595075878ef4519b980d1f00c88f1162e440ec558172988fe44af16", kill_on_drop: false }`
[INFO] [stdout] 2fa324c10595075878ef4519b980d1f00c88f1162e440ec558172988fe44af16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f81485621ec0545452f4947b2778eb5bdd8e69ae9d0ca9d5dc4876261416c06
[INFO] running `Command { std: "docker" "start" "-a" "7f81485621ec0545452f4947b2778eb5bdd8e69ae9d0ca9d5dc4876261416c06", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling half v1.8.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling criterion-plot v0.4.5
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stdout] warning: fields `weight` and `group` are never read
[INFO] [stdout]   --> src/dataset.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Instance {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub weight: f64,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 24 |     /// Group ID of the instance
[INFO] [stdout] 25 |     pub group: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Instance` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FeatureRefHeader` is never constructed
[INFO] [stdout]   --> src/model.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct FeatureRefHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FeatureHeader` is never constructed
[INFO] [stdout]   --> src/model.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct FeatureHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `num_attrs` is never read
[INFO] [stdout]   --> src/tagger.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Tagger<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     num_attrs: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tagger` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/model.rs:189:29
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stdout]     |                             ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stdout]     |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/model.rs:201:28
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stdout]     |                            ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling liblbfgs-sys v0.1.2
[INFO] [stderr]    Compiling cqdb-sys v0.1.1
[INFO] [stderr]    Compiling crfsuite-sys v0.3.1
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling crfsuite v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling criterion v0.3.6
[INFO] [stderr]    Compiling crfs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `weight` and `group` are never read
[INFO] [stdout]   --> src/dataset.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Instance {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 23 |     pub weight: f64,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 24 |     /// Group ID of the instance
[INFO] [stdout] 25 |     pub group: u32,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Instance` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FeatureRefHeader` is never constructed
[INFO] [stdout]   --> src/model.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 | struct FeatureRefHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FeatureHeader` is never constructed
[INFO] [stdout]   --> src/model.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | struct FeatureHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `num_attrs` is never read
[INFO] [stdout]   --> src/tagger.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Tagger<'a> {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     num_attrs: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Tagger` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/model.rs:189:29
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stdout]     |                             ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stdout]     |                                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/model.rs:201:28
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stdout]     |                            ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stdout]     |                                                                      ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 14.63s
[INFO] running `Command { std: "docker" "inspect" "7f81485621ec0545452f4947b2778eb5bdd8e69ae9d0ca9d5dc4876261416c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f81485621ec0545452f4947b2778eb5bdd8e69ae9d0ca9d5dc4876261416c06", kill_on_drop: false }`
[INFO] [stdout] 7f81485621ec0545452f4947b2778eb5bdd8e69ae9d0ca9d5dc4876261416c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 121bec03adb40d26ec784369937fc8e56ff85db3fcdd1004aa1b72a59a3994a9
[INFO] running `Command { std: "docker" "start" "-a" "121bec03adb40d26ec784369937fc8e56ff85db3fcdd1004aa1b72a59a3994a9", kill_on_drop: false }`
[INFO] [stderr] warning: fields `weight` and `group` are never read
[INFO] [stderr]   --> src/dataset.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct Instance {
[INFO] [stderr]    |            -------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 23 |     pub weight: f64,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 24 |     /// Group ID of the instance
[INFO] [stderr] 25 |     pub group: u32,
[INFO] [stderr]    |         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Instance` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FeatureRefHeader` is never constructed
[INFO] [stderr]   --> src/model.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 | struct FeatureRefHeader {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FeatureHeader` is never constructed
[INFO] [stderr]   --> src/model.rs:69:8
[INFO] [stderr]    |
[INFO] [stderr] 69 | struct FeatureHeader {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `num_attrs` is never read
[INFO] [stderr]   --> src/tagger.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Tagger<'a> {
[INFO] [stderr]    |            ------ field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 34 |     num_attrs: u32,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Tagger` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/model.rs:189:29
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stderr]     |                             ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub(crate) fn label_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stderr]     |                                                                       ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/model.rs:201:28
[INFO] [stderr]     |
[INFO] [stderr] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs> {
[INFO] [stderr]     |                            ^^^^^                          ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 201 |     pub(crate) fn attr_ref(&self, lid: u32) -> io::Result<FeatureRefs<'_>> {
[INFO] [stderr]     |                                                                      ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `crfs` (lib) generated 6 warnings (run `cargo fix --lib -p crfs` to apply 2 suggestions)
[INFO] [stderr] warning: `crfs` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/crfs-8fc1fdea02c6b406)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test context::tests::test_context_new ... ok
[INFO] [stderr]    Doc-tests crfs
[INFO] [stdout] test context::tests::test_context_reset ... ok
[INFO] [stdout] test model::tests::test_invalid_model ... ok
[INFO] [stdout] test model::tests::test_model_dump ... ok
[INFO] [stdout] test model::tests::test_model_tag ... ok
[INFO] [stdout] test model::tests::test_model_new ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "121bec03adb40d26ec784369937fc8e56ff85db3fcdd1004aa1b72a59a3994a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "121bec03adb40d26ec784369937fc8e56ff85db3fcdd1004aa1b72a59a3994a9", kill_on_drop: false }`
[INFO] [stdout] 121bec03adb40d26ec784369937fc8e56ff85db3fcdd1004aa1b72a59a3994a9
