[INFO] fetching crate tiro 0.2.1...
[INFO] checking tiro-0.2.1 against try#4e3d7541a523df82cea75064e44e60ae9a008bcb for pr-97427
[INFO] extracting crate tiro 0.2.1 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate tiro 0.2.1 on toolchain 4e3d7541a523df82cea75064e44e60ae9a008bcb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tiro 0.2.1
[INFO] finished tweaking crates.io crate tiro 0.2.1
[INFO] tweaked toml for crates.io crate tiro 0.2.1 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate tiro 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 303a77134873f59dfd7231d4227402b2003c0b4d48d1f04703b4f1df07776de7
[INFO] running `Command { std: "docker" "start" "-a" "303a77134873f59dfd7231d4227402b2003c0b4d48d1f04703b4f1df07776de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "303a77134873f59dfd7231d4227402b2003c0b4d48d1f04703b4f1df07776de7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "303a77134873f59dfd7231d4227402b2003c0b4d48d1f04703b4f1df07776de7", kill_on_drop: false }`
[INFO] [stdout] 303a77134873f59dfd7231d4227402b2003c0b4d48d1f04703b4f1df07776de7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+4e3d7541a523df82cea75064e44e60ae9a008bcb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c081b9128accffa50eb4a7f8cdc8fbb419cb8c7be18d413e9b3dda401e194ce
[INFO] running `Command { std: "docker" "start" "-a" "3c081b9128accffa50eb4a7f8cdc8fbb419cb8c7be18d413e9b3dda401e194ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking unicode-bidi v0.3.6
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking tinyvec v1.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling libdbus-sys v0.2.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking dbus v0.6.5
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling libgit2-sys v0.12.22+1.1.0
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify-rust v3.6.3
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]    Compiling vergen v3.2.0
[INFO] [stderr]    Compiling tiro v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking git2 v0.13.21
[INFO] [stdout] warning: field is never read: `e`
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     e: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `TiroError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:35:10
[INFO] [stdout]    |
[INFO] [stdout] 35 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `e`
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     e: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `TiroError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:35:10
[INFO] [stdout]    |
[INFO] [stdout] 35 | #[derive(Debug)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.11s
[INFO] running `Command { std: "docker" "inspect" "3c081b9128accffa50eb4a7f8cdc8fbb419cb8c7be18d413e9b3dda401e194ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c081b9128accffa50eb4a7f8cdc8fbb419cb8c7be18d413e9b3dda401e194ce", kill_on_drop: false }`
[INFO] [stdout] 3c081b9128accffa50eb4a7f8cdc8fbb419cb8c7be18d413e9b3dda401e194ce