[INFO] fetching crate algar 0.4.1...
[INFO] checking algar-0.4.1 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate algar 0.4.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate algar 0.4.1 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 algar 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate algar 0.4.1
[INFO] tweaked toml for crates.io crate algar 0.4.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate algar 0.4.1 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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2fa44406465f778f2efa65861a84083ea48b0409b53bc89b723a03f94d565f14
[INFO] running `Command { std: "docker" "start" "-a" "2fa44406465f778f2efa65861a84083ea48b0409b53bc89b723a03f94d565f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fa44406465f778f2efa65861a84083ea48b0409b53bc89b723a03f94d565f14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fa44406465f778f2efa65861a84083ea48b0409b53bc89b723a03f94d565f14", kill_on_drop: false }`
[INFO] [stdout] 2fa44406465f778f2efa65861a84083ea48b0409b53bc89b723a03f94d565f14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2e3eddf6aa932ca1313e49f98d805d7213d9f75ec028f21006f000b537407302
[INFO] running `Command { std: "docker" "start" "-a" "2e3eddf6aa932ca1313e49f98d805d7213d9f75ec028f21006f000b537407302", kill_on_drop: false }`
[INFO] [stderr]     Checking algar v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Expr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/2_expr_coproduct_of_functors.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Expr(Box<Op<Expr>>);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MulExpr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/2_expr_coproduct_of_functors.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub struct MulExpr(Box<OpMul<MulExpr>>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "2e3eddf6aa932ca1313e49f98d805d7213d9f75ec028f21006f000b537407302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3eddf6aa932ca1313e49f98d805d7213d9f75ec028f21006f000b537407302", kill_on_drop: false }`
[INFO] [stdout] 2e3eddf6aa932ca1313e49f98d805d7213d9f75ec028f21006f000b537407302
[INFO] checking algar-0.4.1 against try#6a5749073f2ebf59d7740d30e50a932a85756ee7 for pr-127655
[INFO] extracting crate algar 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate algar 0.4.1 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 algar 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate algar 0.4.1
[INFO] tweaked toml for crates.io crate algar 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate algar 0.4.1 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" "+6a5749073f2ebf59d7740d30e50a932a85756ee7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1d329e7e1f2c12103223f047c434306a468d41472ea3a2c7d430e01405b8847a
[INFO] running `Command { std: "docker" "start" "-a" "1d329e7e1f2c12103223f047c434306a468d41472ea3a2c7d430e01405b8847a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d329e7e1f2c12103223f047c434306a468d41472ea3a2c7d430e01405b8847a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d329e7e1f2c12103223f047c434306a468d41472ea3a2c7d430e01405b8847a", kill_on_drop: false }`
[INFO] [stdout] 1d329e7e1f2c12103223f047c434306a468d41472ea3a2c7d430e01405b8847a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 94362ddaec8f7e9e30e468e5ee61a13a8094dfd0a6516e363d276a6ca860045d
[INFO] running `Command { std: "docker" "start" "-a" "94362ddaec8f7e9e30e468e5ee61a13a8094dfd0a6516e363d276a6ca860045d", kill_on_drop: false }`
[INFO] [stderr]     Checking algar v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Expr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/2_expr_coproduct_of_functors.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Expr(Box<Op<Expr>>);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MulExpr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/2_expr_coproduct_of_functors.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub struct MulExpr(Box<OpMul<MulExpr>>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.20s
[INFO] running `Command { std: "docker" "inspect" "94362ddaec8f7e9e30e468e5ee61a13a8094dfd0a6516e363d276a6ca860045d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94362ddaec8f7e9e30e468e5ee61a13a8094dfd0a6516e363d276a6ca860045d", kill_on_drop: false }`
[INFO] [stdout] 94362ddaec8f7e9e30e468e5ee61a13a8094dfd0a6516e363d276a6ca860045d
