[INFO] updating cached repository https://github.com/ahouts/mbuffer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] e198c4cd8762a038dde0af1710f32f20a0986edf
[INFO] testing ahouts/mbuffer against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fmbuffer" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahouts/mbuffer on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ahouts/mbuffer
[INFO] finished tweaking git repo https://github.com/ahouts/mbuffer
[INFO] tweaked toml for git repo https://github.com/ahouts/mbuffer written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ahouts/mbuffer already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] ab62f06fc0ff68d07b5164e934318f462a38b0fa06f78fe0c2dd9618204deb5b
[INFO] running `"docker" "start" "-a" "ab62f06fc0ff68d07b5164e934318f462a38b0fa06f78fe0c2dd9618204deb5b"`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling mbuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/buff/mod.rs:17:70
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Read + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/buff/mod.rs:17:95
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stderr]    |                                                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.08s
[INFO] running `"docker" "inspect" "ab62f06fc0ff68d07b5164e934318f462a38b0fa06f78fe0c2dd9618204deb5b"`
[INFO] running `"docker" "rm" "-f" "ab62f06fc0ff68d07b5164e934318f462a38b0fa06f78fe0c2dd9618204deb5b"`
[INFO] [stdout] ab62f06fc0ff68d07b5164e934318f462a38b0fa06f78fe0c2dd9618204deb5b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 465692f4f00c36ec8f7a155a6a7e29722854ee15a5078028e56d631ab9b1571a
[INFO] running `"docker" "start" "-a" "465692f4f00c36ec8f7a155a6a7e29722854ee15a5078028e56d631ab9b1571a"`
[INFO] [stderr]    Compiling mbuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/buff/mod.rs:17:70
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stderr]    |                                                                      ^^^^^^^^^^^ help: use `dyn`: `dyn Read + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/buff/mod.rs:17:95
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn new(segment_length: usize, buffer_size: usize, mut r: Box<Read + Send>, mut w: Box<Write + Send>) -> Self {
[INFO] [stderr]    |                                                                                               ^^^^^^^^^^^^ help: use `dyn`: `dyn Write + Send`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "465692f4f00c36ec8f7a155a6a7e29722854ee15a5078028e56d631ab9b1571a"`
[INFO] running `"docker" "rm" "-f" "465692f4f00c36ec8f7a155a6a7e29722854ee15a5078028e56d631ab9b1571a"`
[INFO] [stdout] 465692f4f00c36ec8f7a155a6a7e29722854ee15a5078028e56d631ab9b1571a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 3bb4d07aec32f92984da21c54ba1c3688ce1e1ce889082a8abd72cf59d8d0a58
[INFO] running `"docker" "start" "-a" "3bb4d07aec32f92984da21c54ba1c3688ce1e1ce889082a8abd72cf59d8d0a58"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mbuffer-98eb85e330886877
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3bb4d07aec32f92984da21c54ba1c3688ce1e1ce889082a8abd72cf59d8d0a58"`
[INFO] running `"docker" "rm" "-f" "3bb4d07aec32f92984da21c54ba1c3688ce1e1ce889082a8abd72cf59d8d0a58"`
[INFO] [stdout] 3bb4d07aec32f92984da21c54ba1c3688ce1e1ce889082a8abd72cf59d8d0a58