[INFO] fetching crate argopt-impl 0.3.0...
[INFO] checking argopt-impl-0.3.0 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate argopt-impl 0.3.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate argopt-impl 0.3.0 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate argopt-impl 0.3.0
[INFO] finished tweaking crates.io crate argopt-impl 0.3.0
[INFO] tweaked toml for crates.io crate argopt-impl 0.3.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding convert_case v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding darling v0.13.4 (latest: v0.20.10)
[INFO] [stderr]       Adding darling_core v0.13.4 (latest: v0.20.10)
[INFO] [stderr]       Adding darling_macro v0.13.4 (latest: v0.20.10)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.71)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc2969d005632642ab2cec5cca1e30f7fb3eae4060e9c8d6118b61c3a759f66e
[INFO] running `Command { std: "docker" "start" "-a" "cc2969d005632642ab2cec5cca1e30f7fb3eae4060e9c8d6118b61c3a759f66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc2969d005632642ab2cec5cca1e30f7fb3eae4060e9c8d6118b61c3a759f66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc2969d005632642ab2cec5cca1e30f7fb3eae4060e9c8d6118b61c3a759f66e", kill_on_drop: false }`
[INFO] [stdout] cc2969d005632642ab2cec5cca1e30f7fb3eae4060e9c8d6118b61c3a759f66e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d3f89afef031eb60b39a255b7d15ee18c812bc833f9fae90c535d4162bebd99
[INFO] running `Command { std: "docker" "start" "-a" "2d3f89afef031eb60b39a255b7d15ee18c812bc833f9fae90c535d4162bebd99", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking convert_case v0.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking darling v0.13.4
[INFO] [stderr]     Checking argopt-impl v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `SubCmdAttr` is never constructed
[INFO] [stdout]    --> src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | struct SubCmdAttr {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubCmdAttr` is never constructed
[INFO] [stdout]    --> src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | struct SubCmdAttr {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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 3.19s
[INFO] running `Command { std: "docker" "inspect" "2d3f89afef031eb60b39a255b7d15ee18c812bc833f9fae90c535d4162bebd99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d3f89afef031eb60b39a255b7d15ee18c812bc833f9fae90c535d4162bebd99", kill_on_drop: false }`
[INFO] [stdout] 2d3f89afef031eb60b39a255b7d15ee18c812bc833f9fae90c535d4162bebd99
[INFO] checking argopt-impl-0.3.0 against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] extracting crate argopt-impl 0.3.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate argopt-impl 0.3.0 on toolchain 6a5749073f2ebf59d7740d30e50a932a85756ee7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate argopt-impl 0.3.0
[INFO] finished tweaking crates.io crate argopt-impl 0.3.0
[INFO] tweaked toml for crates.io crate argopt-impl 0.3.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] [stderr]       Adding convert_case v0.5.0 (latest: v0.6.0)
[INFO] [stderr]       Adding darling v0.13.4 (latest: v0.20.10)
[INFO] [stderr]       Adding darling_core v0.13.4 (latest: v0.20.10)
[INFO] [stderr]       Adding darling_macro v0.13.4 (latest: v0.20.10)
[INFO] [stderr]       Adding strsim v0.10.0 (latest: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.71)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5da40f73695da4e46c5ceaa56e085e88126e56c70c748d2e2a457f47be068c8e
[INFO] running `Command { std: "docker" "start" "-a" "5da40f73695da4e46c5ceaa56e085e88126e56c70c748d2e2a457f47be068c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5da40f73695da4e46c5ceaa56e085e88126e56c70c748d2e2a457f47be068c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5da40f73695da4e46c5ceaa56e085e88126e56c70c748d2e2a457f47be068c8e", kill_on_drop: false }`
[INFO] [stdout] 5da40f73695da4e46c5ceaa56e085e88126e56c70c748d2e2a457f47be068c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e9128b6e2754328df718f93efc4ca77a70c3fd8564ddb95b632e7d70918d640
[INFO] running `Command { std: "docker" "start" "-a" "1e9128b6e2754328df718f93efc4ca77a70c3fd8564ddb95b632e7d70918d640", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking convert_case v0.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking darling v0.13.4
[INFO] [stderr]     Checking argopt-impl v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `SubCmdAttr` is never constructed
[INFO] [stdout]    --> src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | struct SubCmdAttr {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubCmdAttr` is never constructed
[INFO] [stdout]    --> src/lib.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 | struct SubCmdAttr {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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 3.29s
[INFO] running `Command { std: "docker" "inspect" "1e9128b6e2754328df718f93efc4ca77a70c3fd8564ddb95b632e7d70918d640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e9128b6e2754328df718f93efc4ca77a70c3fd8564ddb95b632e7d70918d640", kill_on_drop: false }`
[INFO] [stdout] 1e9128b6e2754328df718f93efc4ca77a70c3fd8564ddb95b632e7d70918d640
