[INFO] cloning repository https://github.com/leethomas/logbook-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leethomas/logbook-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleethomas%2Flogbook-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleethomas%2Flogbook-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04c7588699c45cfb612743602cc62ba1c45ba6e8
[INFO] checking leethomas/logbook-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleethomas%2Flogbook-rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leethomas/logbook-rs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leethomas/logbook-rs
[INFO] finished tweaking git repo https://github.com/leethomas/logbook-rs
[INFO] tweaked toml for git repo https://github.com/leethomas/logbook-rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/leethomas/logbook-rs 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded text_io v0.1.8
[INFO] [stderr]   Downloaded confy v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5247f99fef86b562442d411e78f8c14025c2cf35df5c938af3e545beeb51a2f3
[INFO] running `Command { std: "docker" "start" "-a" "5247f99fef86b562442d411e78f8c14025c2cf35df5c938af3e545beeb51a2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5247f99fef86b562442d411e78f8c14025c2cf35df5c938af3e545beeb51a2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5247f99fef86b562442d411e78f8c14025c2cf35df5c938af3e545beeb51a2f3", kill_on_drop: false }`
[INFO] [stdout] 5247f99fef86b562442d411e78f8c14025c2cf35df5c938af3e545beeb51a2f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b4a693b2b2554cbd499c8b52a60c33480e031c99ac94b74bbf0628c5b95d4ad
[INFO] running `Command { std: "docker" "start" "-a" "3b4a693b2b2554cbd499c8b52a60c33480e031c99ac94b74bbf0628c5b95d4ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]    Compiling parse-zoneinfo v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling chrono-tz v0.4.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking confy v0.4.0
[INFO] [stderr]     Checking logbook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `confy` is imported redundantly
[INFO] [stdout]  --> src/logbook.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use confy;
[INFO] [stdout]   |     ^^^^^ the item `confy` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `confy` is imported redundantly
[INFO] [stdout]  --> src/logbook.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use confy;
[INFO] [stdout]   |     ^^^^^ the item `confy` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.10s
[INFO] running `Command { std: "docker" "inspect" "3b4a693b2b2554cbd499c8b52a60c33480e031c99ac94b74bbf0628c5b95d4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4a693b2b2554cbd499c8b52a60c33480e031c99ac94b74bbf0628c5b95d4ad", kill_on_drop: false }`
[INFO] [stdout] 3b4a693b2b2554cbd499c8b52a60c33480e031c99ac94b74bbf0628c5b95d4ad
[INFO] checking leethomas/logbook-rs against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleethomas%2Flogbook-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leethomas/logbook-rs on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leethomas/logbook-rs
[INFO] finished tweaking git repo https://github.com/leethomas/logbook-rs
[INFO] tweaked toml for git repo https://github.com/leethomas/logbook-rs written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/leethomas/logbook-rs 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6eea38cef4b33db456f84af50188d812a61a080cf95b27815bb3a6fd233eb24
[INFO] running `Command { std: "docker" "start" "-a" "f6eea38cef4b33db456f84af50188d812a61a080cf95b27815bb3a6fd233eb24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6eea38cef4b33db456f84af50188d812a61a080cf95b27815bb3a6fd233eb24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6eea38cef4b33db456f84af50188d812a61a080cf95b27815bb3a6fd233eb24", kill_on_drop: false }`
[INFO] [stdout] f6eea38cef4b33db456f84af50188d812a61a080cf95b27815bb3a6fd233eb24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47bcd579f2eecbe85db125086ac5ff84eb1d3ef9bee06a5e938810779788f425
[INFO] running `Command { std: "docker" "start" "-a" "47bcd579f2eecbe85db125086ac5ff84eb1d3ef9bee06a5e938810779788f425", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]    Compiling parse-zoneinfo v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling chrono-tz v0.4.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking confy v0.4.0
[INFO] [stderr]     Checking logbook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `confy` is imported redundantly
[INFO] [stdout]  --> src/logbook.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use confy;
[INFO] [stdout]   |     ^^^^^ the item `confy` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `confy` is imported redundantly
[INFO] [stdout]  --> src/logbook.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use confy;
[INFO] [stdout]   |     ^^^^^ the item `confy` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.55s
[INFO] running `Command { std: "docker" "inspect" "47bcd579f2eecbe85db125086ac5ff84eb1d3ef9bee06a5e938810779788f425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47bcd579f2eecbe85db125086ac5ff84eb1d3ef9bee06a5e938810779788f425", kill_on_drop: false }`
[INFO] [stdout] 47bcd579f2eecbe85db125086ac5ff84eb1d3ef9bee06a5e938810779788f425