[INFO] cloning repository https://github.com/j-tai/promptress
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/j-tai/promptress" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-tai%2Fpromptress", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-tai%2Fpromptress'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dabf27cd6539e0ca7d6698eaff3c9762d1e31fad
[INFO] checking j-tai/promptress against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-tai%2Fpromptress" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j-tai/promptress on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j-tai/promptress
[INFO] finished tweaking git repo https://github.com/j-tai/promptress
[INFO] tweaked toml for git repo https://github.com/j-tai/promptress written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/j-tai/promptress already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "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] e6a076f09c84c1679b85e0e2a03e052c709c8cdbc99b3bf82a410eca1580150e
[INFO] running `Command { std: "docker" "start" "-a" "e6a076f09c84c1679b85e0e2a03e052c709c8cdbc99b3bf82a410eca1580150e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6a076f09c84c1679b85e0e2a03e052c709c8cdbc99b3bf82a410eca1580150e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6a076f09c84c1679b85e0e2a03e052c709c8cdbc99b3bf82a410eca1580150e", kill_on_drop: false }`
[INFO] [stdout] e6a076f09c84c1679b85e0e2a03e052c709c8cdbc99b3bf82a410eca1580150e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1fde40f55259dea226d3b72d8b1f688cd321aae067d4f25e793a885a37d4a637
[INFO] running `Command { std: "docker" "start" "-a" "1fde40f55259dea226d3b72d8b1f688cd321aae067d4f25e793a885a37d4a637", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking if_chain v1.0.0
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking users v0.9.1
[INFO] [stderr]     Checking termion v1.5.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling cc v1.0.45
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libgit2-sys v0.9.1
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]     Checking git2 v0.10.1
[INFO] [stderr]     Checking toml v0.5.1
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking promptress v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/parts/workdir.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |                 mem::replace(part, stem);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/parts/workdir.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |                 mem::replace(part, stem);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 59.43s
[INFO] running `Command { std: "docker" "inspect" "1fde40f55259dea226d3b72d8b1f688cd321aae067d4f25e793a885a37d4a637", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fde40f55259dea226d3b72d8b1f688cd321aae067d4f25e793a885a37d4a637", kill_on_drop: false }`
[INFO] [stdout] 1fde40f55259dea226d3b72d8b1f688cd321aae067d4f25e793a885a37d4a637