[INFO] cloning repository https://github.com/hhoshino0421/RustSampleVariable2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hhoshino0421/RustSampleVariable2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhoshino0421%2FRustSampleVariable2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhoshino0421%2FRustSampleVariable2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c16bf15b9d71717c756557646e8372e43640fbc
[INFO] checking hhoshino0421/RustSampleVariable2 against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhhoshino0421%2FRustSampleVariable2" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hhoshino0421/RustSampleVariable2 on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hhoshino0421/RustSampleVariable2
[INFO] finished tweaking git repo https://github.com/hhoshino0421/RustSampleVariable2
[INFO] tweaked toml for git repo https://github.com/hhoshino0421/RustSampleVariable2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/hhoshino0421/RustSampleVariable2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 496761c548cf9aa98189996930a9bea3c0d3c26c41932dfe21dc53bcecacf499
[INFO] running `Command { std: "docker" "start" "-a" "496761c548cf9aa98189996930a9bea3c0d3c26c41932dfe21dc53bcecacf499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "496761c548cf9aa98189996930a9bea3c0d3c26c41932dfe21dc53bcecacf499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "496761c548cf9aa98189996930a9bea3c0d3c26c41932dfe21dc53bcecacf499", kill_on_drop: false }`
[INFO] [stdout] 496761c548cf9aa98189996930a9bea3c0d3c26c41932dfe21dc53bcecacf499
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8b593f0669192cbef3b5c78e733a3854884903e89d3b9361ead364936dcafde
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b8b593f0669192cbef3b5c78e733a3854884903e89d3b9361ead364936dcafde", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking variables2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no function or associated item named `value` found for struct `std::string::String` in the current scope
[INFO] [stdout]   --> src/main.rs:45:24
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let str2 = String::value("");
[INFO] [stdout]    |                        ^^^^^ function or associated item not found in `std::string::String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `variables2`.
[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] [stdout] error[E0599]: no function or associated item named `value` found for struct `std::string::String` in the current scope
[INFO] [stdout]   --> src/main.rs:45:24
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let str2 = String::value("");
[INFO] [stdout]    |                        ^^^^^ function or associated item not found in `std::string::String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "b8b593f0669192cbef3b5c78e733a3854884903e89d3b9361ead364936dcafde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8b593f0669192cbef3b5c78e733a3854884903e89d3b9361ead364936dcafde", kill_on_drop: false }`
[INFO] [stdout] b8b593f0669192cbef3b5c78e733a3854884903e89d3b9361ead364936dcafde