[INFO] cloning repository https://github.com/jmesmon/freqm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmesmon/freqm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c41d20858c60833b0e8fb7bb2a6047ceafbb36da
[INFO] checking jmesmon/freqm against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmesmon/freqm 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 git repo https://github.com/jmesmon/freqm
[INFO] finished tweaking git repo https://github.com/jmesmon/freqm
[INFO] tweaked toml for git repo https://github.com/jmesmon/freqm written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/jmesmon/freqm 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 }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "70255832ef8c50097a406f614c7f11b0c643cfda289507c16e2f2b5ff77c4172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70255832ef8c50097a406f614c7f11b0c643cfda289507c16e2f2b5ff77c4172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70255832ef8c50097a406f614c7f11b0c643cfda289507c16e2f2b5ff77c4172", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 3d50b06257442ab9754658d3269508230f60da84392a93a2e921c0cfe0dc24f0
[INFO] running `Command { std: "docker" "start" "-a" "3d50b06257442ab9754658d3269508230f60da84392a93a2e921c0cfe0dc24f0", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[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]   libc v0.2.69: use_std
[INFO] [stderr]   memchr v2.3.3: default
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[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling pkg-config v0.3.17
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[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
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[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
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[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
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[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
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[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking clap v2.33.0
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[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling snafu-derive v0.6.6
[INFO] [stderr]    Compiling structopt-derive v0.4.6
[INFO] [stderr]     Checking snafu v0.6.6
[INFO] [stderr]     Checking structopt v0.3.13
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking freqm v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/sparse_mem.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (1 fix)
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `freq_as_offset`
[INFO] [stdout]    --> src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn freq_as_offset(&self) -> (f64, f64) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bandwidth`
[INFO] [stdout]    --> src/main.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn bandwidth(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mode`
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn mode(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_in`
[INFO] [stdout]    --> src/main.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn code_in(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_out`
[INFO] [stdout]    --> src/main.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn code_out(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `freq_as_offset`
[INFO] [stdout]    --> src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn freq_as_offset(&self) -> (f64, f64) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bandwidth`
[INFO] [stdout]    --> src/main.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn bandwidth(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mode`
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn mode(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_in`
[INFO] [stdout]    --> src/main.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn code_in(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_out`
[INFO] [stdout]    --> src/main.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn code_out(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.55s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking bstr v0.2.12
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]     Checking serial-core v0.4.0
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking ioctl-rs v0.1.6
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking decimal v2.0.4
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking serial-unix v0.4.0
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking serial v0.4.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking structopt v0.3.13
[INFO] [stderr]     Checking hibitset v0.6.3
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking freqm v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]  --> src/main.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[warn(rust_2018_idioms, missing_debug_implementations, missing_docs)]
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `freq_as_offset`
[INFO] [stdout]    --> src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn freq_as_offset(&self) -> (f64, f64) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bandwidth`
[INFO] [stdout]    --> src/main.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn bandwidth(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mode`
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn mode(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_in`
[INFO] [stdout]    --> src/main.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn code_in(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_out`
[INFO] [stdout]    --> src/main.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn code_out(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `freq_as_offset`
[INFO] [stdout]    --> src/main.rs:239:8
[INFO] [stdout]     |
[INFO] [stdout] 239 |     fn freq_as_offset(&self) -> (f64, f64) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bandwidth`
[INFO] [stdout]    --> src/main.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn bandwidth(&self) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mode`
[INFO] [stdout]    --> src/main.rs:247:8
[INFO] [stdout]     |
[INFO] [stdout] 247 |     fn mode(&self) -> usize {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_in`
[INFO] [stdout]    --> src/main.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn code_in(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `code_out`
[INFO] [stdout]    --> src/main.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 257 |     fn code_out(&self) -> Option<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.63s
[INFO] running `Command { std: "docker" "inspect" "3d50b06257442ab9754658d3269508230f60da84392a93a2e921c0cfe0dc24f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d50b06257442ab9754658d3269508230f60da84392a93a2e921c0cfe0dc24f0", kill_on_drop: false }`
[INFO] [stdout] 3d50b06257442ab9754658d3269508230f60da84392a93a2e921c0cfe0dc24f0