[INFO] cloning repository https://github.com/aschampion/h2n5
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aschampion/h2n5" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faschampion%2Fh2n5"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faschampion%2Fh2n5'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b4837dbc5cd525ff62b75407f26aca8c84edb60
[INFO] checking aschampion/h2n5 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faschampion%2Fh2n5" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aschampion/h2n5 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aschampion/h2n5
[INFO] finished tweaking git repo https://github.com/aschampion/h2n5
[INFO] tweaked toml for git repo https://github.com/aschampion/h2n5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/aschampion/h2n5 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 604395413dc074bcbb4c3c6ddf007b13147a86498ef9672e395aa76f34ecb31d
[INFO] running `"docker" "start" "-a" "604395413dc074bcbb4c3c6ddf007b13147a86498ef9672e395aa76f34ecb31d"`
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking tokio-executor v0.1.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.1.3
[INFO] [stderr]    Compiling actix_derive v0.2.0
[INFO] [stderr]     Checking socket2 v0.3.7
[INFO] [stderr]    Compiling actix-web v0.7.1
[INFO] [stderr]    Compiling lz4-sys v1.8.0
[INFO] [stderr]     Checking miniz_oxide v0.1.3
[INFO] [stderr]     Checking bytes v0.4.9
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking mio v0.6.15
[INFO] [stderr]    Compiling lzma-sys v0.1.10
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]    Compiling getopts v0.2.18
[INFO] [stderr]     Checking resolv-conf v0.6.1
[INFO] [stderr]     Checking backtrace-sys v0.1.23
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]     Checking miniz-sys v0.1.10
[INFO] [stderr]     Checking brotli-sys v0.3.2
[INFO] [stderr]     Checking bzip2-sys v0.1.6
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]     Checking tokio-timer v0.2.4
[INFO] [stderr]     Checking ndarray v0.11.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking mime v0.3.8
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]     Checking tokio-io v0.1.7
[INFO] [stderr]     Checking http v0.1.7
[INFO] [stderr]     Checking backtrace v0.2.3
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.5
[INFO] [stderr]    Compiling pulldown-cmark v0.0.8
[INFO] [stderr]     Checking phf v0.7.22
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking mio-uds v0.6.6
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]     Checking error-chain v0.1.12
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]     Checking tokio-reactor v0.1.2
[INFO] [stderr]     Checking tokio-codec v0.1.0
[INFO] [stderr]     Checking rayon v1.0.2
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking crossbeam-channel v0.2.3
[INFO] [stderr]    Compiling skeptic v0.9.0
[INFO] [stderr]     Checking tokio-fs v0.1.2
[INFO] [stderr]     Checking xz2 v0.1.5
[INFO] [stderr]     Checking h2 v0.1.10
[INFO] [stderr]     Checking tokio-tcp v0.1.0
[INFO] [stderr]     Checking tokio-udp v0.1.1
[INFO] [stderr]     Checking tokio-signal v0.2.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling lz4 v1.22.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]     Checking tokio v0.1.7
[INFO] [stderr]     Checking trust-dns-proto v0.4.0
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking trust-dns-resolver v0.9.0
[INFO] [stderr]     Checking structopt v0.2.10
[INFO] [stderr]     Checking actix v0.7.1
[INFO] [stderr]     Checking cookie v0.10.1
[INFO] [stderr]     Checking n5 v0.2.1
[INFO] [stderr]     Checking h2n5 v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 let mut encoder = image::png::PNGEncoder::new(writer);
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 let mut encoder = image::png::PNGEncoder::new(writer);
[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]     Finished dev [unoptimized + debuginfo] target(s) in 2m 52s
[INFO] running `"docker" "inspect" "604395413dc074bcbb4c3c6ddf007b13147a86498ef9672e395aa76f34ecb31d"`
[INFO] running `"docker" "rm" "-f" "604395413dc074bcbb4c3c6ddf007b13147a86498ef9672e395aa76f34ecb31d"`
[INFO] [stdout] 604395413dc074bcbb4c3c6ddf007b13147a86498ef9672e395aa76f34ecb31d