[INFO] cloning repository https://github.com/nicmr/jargo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicmr/jargo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicmr%2Fjargo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicmr%2Fjargo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 440d2db8653d28f2f33aef691ab012601f7d513e
[INFO] checking nicmr/jargo against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicmr%2Fjargo" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nicmr/jargo on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nicmr/jargo
[INFO] finished tweaking git repo https://github.com/nicmr/jargo
[INFO] tweaked toml for git repo https://github.com/nicmr/jargo written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nicmr/jargo 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.79
[INFO] [stderr]   Downloaded toml v0.4.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2502365c890568d92cd0bd0b2790223475d83c234a2811e95776e31ff47f1a02
[INFO] running `Command { std: "docker" "start" "-a" "2502365c890568d92cd0bd0b2790223475d83c234a2811e95776e31ff47f1a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2502365c890568d92cd0bd0b2790223475d83c234a2811e95776e31ff47f1a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2502365c890568d92cd0bd0b2790223475d83c234a2811e95776e31ff47f1a02", kill_on_drop: false }`
[INFO] [stdout] 2502365c890568d92cd0bd0b2790223475d83c234a2811e95776e31ff47f1a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9041eb8b0e86340caa1ac7da8413e2a0e0a27b80e21b19d4276364015e4edbe2
[INFO] running `Command { std: "docker" "start" "-a" "9041eb8b0e86340caa1ac7da8413e2a0e0a27b80e21b19d4276364015e4edbe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling syn v0.15.9
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking jargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         project.run();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let _ = project.run();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         project.run();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let _ = project.run();
[INFO] [stdout]    |         +++++++
[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` profile [unoptimized + debuginfo] target(s) in 10.13s
[INFO] running `Command { std: "docker" "inspect" "9041eb8b0e86340caa1ac7da8413e2a0e0a27b80e21b19d4276364015e4edbe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9041eb8b0e86340caa1ac7da8413e2a0e0a27b80e21b19d4276364015e4edbe2", kill_on_drop: false }`
[INFO] [stdout] 9041eb8b0e86340caa1ac7da8413e2a0e0a27b80e21b19d4276364015e4edbe2
[INFO] checking nicmr/jargo against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicmr%2Fjargo" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nicmr/jargo on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nicmr/jargo
[INFO] finished tweaking git repo https://github.com/nicmr/jargo
[INFO] tweaked toml for git repo https://github.com/nicmr/jargo written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nicmr/jargo 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f37c583bd58aec3fc0ecfd13810b1fd1d64a581d121901964999fce91d4977bd
[INFO] running `Command { std: "docker" "start" "-a" "f37c583bd58aec3fc0ecfd13810b1fd1d64a581d121901964999fce91d4977bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f37c583bd58aec3fc0ecfd13810b1fd1d64a581d121901964999fce91d4977bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37c583bd58aec3fc0ecfd13810b1fd1d64a581d121901964999fce91d4977bd", kill_on_drop: false }`
[INFO] [stdout] f37c583bd58aec3fc0ecfd13810b1fd1d64a581d121901964999fce91d4977bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c0217dc4edc634d6bb156a8bcdd834969a3a5b3fe3046b8f90c35504750d52b
[INFO] running `Command { std: "docker" "start" "-a" "4c0217dc4edc634d6bb156a8bcdd834969a3a5b3fe3046b8f90c35504750d52b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling syn v0.15.9
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking jargo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         project.run();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let _ = project.run();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/commands.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |         project.run();
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let _ = project.run();
[INFO] [stdout]    |         +++++++
[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` profile [unoptimized + debuginfo] target(s) in 9.71s
[INFO] running `Command { std: "docker" "inspect" "4c0217dc4edc634d6bb156a8bcdd834969a3a5b3fe3046b8f90c35504750d52b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c0217dc4edc634d6bb156a8bcdd834969a3a5b3fe3046b8f90c35504750d52b", kill_on_drop: false }`
[INFO] [stdout] 4c0217dc4edc634d6bb156a8bcdd834969a3a5b3fe3046b8f90c35504750d52b