[INFO] updating cached repository https://github.com/AbsoluteVirtueXI/thread-channel
[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] 786f8894bc76f5cc55a8dede2d4cabdcaa6ab642
[INFO] testing AbsoluteVirtueXI/thread-channel against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAbsoluteVirtueXI%2Fthread-channel" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AbsoluteVirtueXI/thread-channel 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 git repo https://github.com/AbsoluteVirtueXI/thread-channel
[INFO] finished tweaking git repo https://github.com/AbsoluteVirtueXI/thread-channel
[INFO] tweaked toml for git repo https://github.com/AbsoluteVirtueXI/thread-channel written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/AbsoluteVirtueXI/thread-channel 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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 31635c530e0b81557a4a4b5545d6a8df04bcc953d29ac0223de87f341dca55cb
[INFO] running `"docker" "start" "-a" "31635c530e0b81557a4a4b5545d6a8df04bcc953d29ac0223de87f341dca55cb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling futures-channel v0.3.4
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tokio v0.2.20
[INFO] [stderr]    Compiling futures-util v0.3.4
[INFO] [stderr]    Compiling futures-executor v0.3.4
[INFO] [stderr]    Compiling futures v0.3.4
[INFO] [stderr]    Compiling trash-tokio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let (mut tx, mut rx) = mpsc::channel(100);
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.72s
[INFO] running `"docker" "inspect" "31635c530e0b81557a4a4b5545d6a8df04bcc953d29ac0223de87f341dca55cb"`
[INFO] running `"docker" "rm" "-f" "31635c530e0b81557a4a4b5545d6a8df04bcc953d29ac0223de87f341dca55cb"`
[INFO] [stdout] 31635c530e0b81557a4a4b5545d6a8df04bcc953d29ac0223de87f341dca55cb
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 450cc6750ab5e5802ecb06725be63e083dd8e12f81f7c298c30c776b672899ba
[INFO] running `"docker" "start" "-a" "450cc6750ab5e5802ecb06725be63e083dd8e12f81f7c298c30c776b672899ba"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling trash-tokio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let (mut tx, mut rx) = mpsc::channel(100);
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "450cc6750ab5e5802ecb06725be63e083dd8e12f81f7c298c30c776b672899ba"`
[INFO] running `"docker" "rm" "-f" "450cc6750ab5e5802ecb06725be63e083dd8e12f81f7c298c30c776b672899ba"`
[INFO] [stdout] 450cc6750ab5e5802ecb06725be63e083dd8e12f81f7c298c30c776b672899ba
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 77c21ef255da4adaa47936f28b15e87b21f71ed525078cd97b043dddb6c243e5
[INFO] running `"docker" "start" "-a" "77c21ef255da4adaa47936f28b15e87b21f71ed525078cd97b043dddb6c243e5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:7:18
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let (mut tx, mut rx) = mpsc::channel(100);
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trash_tokio-868e96e8ecb17886
[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" "77c21ef255da4adaa47936f28b15e87b21f71ed525078cd97b043dddb6c243e5"`
[INFO] running `"docker" "rm" "-f" "77c21ef255da4adaa47936f28b15e87b21f71ed525078cd97b043dddb6c243e5"`
[INFO] [stdout] 77c21ef255da4adaa47936f28b15e87b21f71ed525078cd97b043dddb6c243e5