[INFO] updating cached repository https://github.com/jmesmon/freqm
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7257a72b837195d8e23e52c9f424874b0e8ae15
[INFO] checking jmesmon/freqm against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmesmon%2Ffreqm" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmesmon/freqm on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jmesmon/freqm already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ec7cba1c08d03e66e546eaed7589176b8f02c9e7290983c2db7d0ced87cf1cb
[INFO] running `"docker" "start" "-a" "5ec7cba1c08d03e66e546eaed7589176b8f02c9e7290983c2db7d0ced87cf1cb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking ord_subset v3.1.1
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling decimal v2.0.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling syn-mid v0.5.0
[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 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `ResultExt`
[INFO] [stderr]  --> src/main.rs:5:28
[INFO] [stderr]   |
[INFO] [stderr] 5 | use snafu::{Snafu, ensure, ResultExt};
[INFO] [stderr]   |                            ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ResultExt`
[INFO] [stderr]  --> src/main.rs:5:28
[INFO] [stderr]   |
[INFO] [stderr] 5 | use snafu::{Snafu, ensure, ResultExt};
[INFO] [stderr]   |                            ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/main.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             other => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `freq_as_offset`
[INFO] [stderr]    --> src/main.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     fn freq_as_offset(&self) -> (f64, f64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bandwidth`
[INFO] [stderr]    --> src/main.rs:237:5
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn bandwidth(&self) -> f64 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mode`
[INFO] [stderr]    --> src/main.rs:241:5
[INFO] [stderr]     |
[INFO] [stderr] 241 |     fn mode(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `code_in`
[INFO] [stderr]    --> src/main.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     fn code_in(&self) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `code_out`
[INFO] [stderr]    --> src/main.rs:251:5
[INFO] [stderr]     |
[INFO] [stderr] 251 |     fn code_out(&self) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]    --> src/main.rs:220:13
[INFO] [stderr]     |
[INFO] [stderr] 220 |             other => {
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `freq_as_offset`
[INFO] [stderr]    --> src/main.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     fn freq_as_offset(&self) -> (f64, f64) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bandwidth`
[INFO] [stderr]    --> src/main.rs:237:5
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn bandwidth(&self) -> f64 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mode`
[INFO] [stderr]    --> src/main.rs:241:5
[INFO] [stderr]     |
[INFO] [stderr] 241 |     fn mode(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `code_in`
[INFO] [stderr]    --> src/main.rs:247:5
[INFO] [stderr]     |
[INFO] [stderr] 247 |     fn code_in(&self) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `code_out`
[INFO] [stderr]    --> src/main.rs:251:5
[INFO] [stderr]     |
[INFO] [stderr] 251 |     fn code_out(&self) -> Option<usize> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `"docker" "inspect" "5ec7cba1c08d03e66e546eaed7589176b8f02c9e7290983c2db7d0ced87cf1cb"`
[INFO] running `"docker" "rm" "-f" "5ec7cba1c08d03e66e546eaed7589176b8f02c9e7290983c2db7d0ced87cf1cb"`
[INFO] [stdout] 5ec7cba1c08d03e66e546eaed7589176b8f02c9e7290983c2db7d0ced87cf1cb