[INFO] fetching crate lz-fear 0.1.1...
[INFO] testing lz-fear-0.1.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate lz-fear 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate lz-fear 0.1.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate lz-fear 0.1.1
[INFO] finished tweaking crates.io crate lz-fear 0.1.1
[INFO] tweaked toml for crates.io crate lz-fear 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate lz-fear 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dc3b9022332711773af88549ac6481a1be63d49d7c43cb6a7d93edddb5053c3c
[INFO] running `"docker" "start" "-a" "dc3b9022332711773af88549ac6481a1be63d49d7c43cb6a7d93edddb5053c3c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling twox-hash v1.5.0
[INFO] [stderr]    Compiling fehler-macros v1.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.14
[INFO] [stderr]    Compiling thiserror v1.0.14
[INFO] [stderr]    Compiling fehler v1.0.0
[INFO] [stderr]    Compiling lz-fear v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.31s
[INFO] running `"docker" "inspect" "dc3b9022332711773af88549ac6481a1be63d49d7c43cb6a7d93edddb5053c3c"`
[INFO] running `"docker" "rm" "-f" "dc3b9022332711773af88549ac6481a1be63d49d7c43cb6a7d93edddb5053c3c"`
[INFO] [stdout] dc3b9022332711773af88549ac6481a1be63d49d7c43cb6a7d93edddb5053c3c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] df330014ba08983c672518e5343ff992a7c843717c0861662b8ef77e6b8b727d
[INFO] running `"docker" "start" "-a" "df330014ba08983c672518e5343ff992a7c843717c0861662b8ef77e6b8b727d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling criterion v0.3.1
[INFO] [stderr]    Compiling lz-fear v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: couldn't read /usr/bin/cargo: No such file or directory (os error 2)
[INFO] [stderr]   --> tests/output_equivalence.rs:70:49
[INFO] [stderr]    |
[INFO] [stderr] 70 |             settings.dictionary(0, /*DICT_DATA*/include_bytes!("/usr/bin/cargo")).dictionary_id_nonsense_override(None);
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> tests/output_equivalence.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ffi::OsStr`
[INFO] [stderr]  --> tests/output_equivalence.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::ffi::OsStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> tests/output_equivalence.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             continue;
[INFO] [stderr]    |             -------- any code following this expression is unreachable
[INFO] [stderr] 65 |             settings.block_size(256 * 1024);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lz4_reader`
[INFO] [stderr]   --> examples/roundtrip.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut lz4_reader = LZ4FrameReader::new(Cursor::new(output))
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_lz4_reader`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/roundtrip.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut lz4_reader = LZ4FrameReader::new(Cursor::new(output))
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `lz-fear`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "df330014ba08983c672518e5343ff992a7c843717c0861662b8ef77e6b8b727d"`
[INFO] running `"docker" "rm" "-f" "df330014ba08983c672518e5343ff992a7c843717c0861662b8ef77e6b8b727d"`
[INFO] [stdout] df330014ba08983c672518e5343ff992a7c843717c0861662b8ef77e6b8b727d