[INFO] cloning repository https://github.com/lishpr/dokrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lishpr/dokrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flishpr%2Fdokrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flishpr%2Fdokrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5a6027bd361fcdc7f5404f235cfdd229d9c05d08
[INFO] checking lishpr/dokrust against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flishpr%2Fdokrust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lishpr/dokrust on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lishpr/dokrust
[INFO] finished tweaking git repo https://github.com/lishpr/dokrust
[INFO] tweaked toml for git repo https://github.com/lishpr/dokrust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lishpr/dokrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0644e238f996b48776d7aa3618d84e80f0f5730333c30dc7e9fb180271f3c80e
[INFO] running `Command { std: "docker" "start" "-a" "0644e238f996b48776d7aa3618d84e80f0f5730333c30dc7e9fb180271f3c80e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0644e238f996b48776d7aa3618d84e80f0f5730333c30dc7e9fb180271f3c80e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0644e238f996b48776d7aa3618d84e80f0f5730333c30dc7e9fb180271f3c80e", kill_on_drop: false }`
[INFO] [stdout] 0644e238f996b48776d7aa3618d84e80f0f5730333c30dc7e9fb180271f3c80e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84ac10bcaa5847946fc275a82d9e01c46d0f7cb37690daea1c1f8c279ccbd889
[INFO] running `Command { std: "docker" "start" "-a" "84ac10bcaa5847946fc275a82d9e01c46d0f7cb37690daea1c1f8c279ccbd889", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking simple-error v0.2.2
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking dokrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/network.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let the_pid = ss.next().unwrap().clone();
[INFO] [stdout]    |                                     ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/network.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let the_pid = ss.next().unwrap().clone();
[INFO] [stdout]    |                                     ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `dokrust` (bin "dokrust") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `dokrust` (bin "dokrust" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "84ac10bcaa5847946fc275a82d9e01c46d0f7cb37690daea1c1f8c279ccbd889", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ac10bcaa5847946fc275a82d9e01c46d0f7cb37690daea1c1f8c279ccbd889", kill_on_drop: false }`
[INFO] [stdout] 84ac10bcaa5847946fc275a82d9e01c46d0f7cb37690daea1c1f8c279ccbd889